1. *du- two: duplicate, dual, duality, duel, duad, duplex, duet, duplicity
2. –dur- hard: duration, endure, obduracy
3. *-dyn-, –dynam- power: dynamic, dynamite, aerodynamics, dyne, dynast, dynasty, electrodynamics, hydrodynamics, dynamo, adynamic
4. –dynia pain: gastrodynia
5. dys- bad [medical] dyspepsia, dysuria, dysphonia
6. *e- see ex-
7. *–ean adj. of n. ending in –pe, -re, etc: European, epicurean, Mediterranean （重音’ean）
8. *ec- see ex-
9. eco- of ecology: ecosystem, ecological
10. –ectasis expansion: bronchiectasis （重音’asis）
11. ecto- outer: ectoderm
12. –ectomy cut: appendectomy
13. –ed- eat: edible, edacious, inedible
14. *–ed 1) past participle: stopped 2) provided or characterized by: spectacled, moneyed, gifted, bearded, skilled 3) adj. from verbs, nouns and adj ending in –ate: cultured, liberated, fixed, confirmed, retired （不影響重音）
15. -edi- build: edify, edifice
16. *–ee 1) someone who is ~ed: referee, trustee, addressee，interviewee, employee 2) someone who ~s: absentee, refugee, retiree, devotee 3) person: townee, grandee 4) thing: goatee, settee （重音’ee）/i:/
17. *–eer 1) n. person engineer, auctioneer, pamphleteer, volunteer, mountaineer 2) v. domineer, commandeer, profiteer, electioneer （重音’eer）/i[/
18. *ef- see ex-
19. *–ego- I: ego, egoist, egoistic, egocentric, egomania, egotist
20. *–eity: n. of adj. ending in –eous: spontaneity, homogeneity （重音’eity）
21. *-el n. person or thing: model, runnel, parcel, personnel, sentinel, novel
22. *electro- electricity: electrocute, electromagnet
23. *-em-, -am-, –empt- take, buy: example, exemplar, exemplary, exemplify, sample, sampler, exemption, redeem, exemptible, redeemable, redemption, irredeemable, peremptory, redemption, exempt
24. –emia blood: anemia, leukemia （重音’emia）
25. *–emper-, -imper- command: emperor, empire, emperorship, imperious, imperial, imperative, imperialism
26. –emul- equal: emulate, emulous
27. *en- [em- before b, m, p; sometimes in-]: 1) to put or get into or on: enthrone, enplane, encase, entrap, embody 2) to cover or wrap with: enrobe, embalm, embank 3) to make, make into or like, cause to be with [added to n, and adj.]: empower, enrich, enliven 3) intensive: encourage
28. *–en 1) become or cause to become [added to n. and adj.] v: weaken, whiten, deepen, broaden, soften, quicken 2) adj. made of: wooden, woolen, leaden, waxen, earthen （不影響重音）
29. *-ence act, fact, quality, state, result or degree: conference, excellence, existence, insistence, dependence, confidence, innocence, despondence (通常重音’ - - ence，但如果原詞末尾發(fā)音是雙輔音或雙元音，重音則為’- ence)
30. *-ency =-ence (but used with different words): urgency, persistency, frequency, efficiency, emergency, insolvency (通常重音’ - - ency，但如果原詞末尾發(fā)音是雙輔音或雙元音，重音則為’- ency)
31. –end: [also -and] n. mostly mathematical terms: dividend, multiplicand, minuend, addend, subtrahend, legend, errand （不影響重音）
32. endo- inner: endocrine, endogamy
33. –enne used in n. denoting female: comedienne, tragedienne （重音’enne）/en/
34. *-ent [adj. or n. of n. ending in –ence or –ency] 1) adj. that has, shows or does: existent, dependent, confident, excellent 2) n. a person or thing that: president, resident, patient, detergent, solvent (通常重音’ - - ent，但如果前面拼寫是雙輔音或發(fā)音是雙元音，重音則為’- ent)
35. entero-: intestines: enteritis
36. ento- inner: entoderm
37. entomo- insect: entomology
38. *–eous adj.: homogeneous, courageous, righteous, courteous （重音’- eous）/i[s/
39. *epi- above, beyond, before, after, between: epidemic, epidermis, epitaph, episode
40. –epistol- letter: epistle, epistolary
41. *–equ-, equi- equal: equality, equilibrium, equable, equivalent, equivalence, equate, equation, equidistance, equator, equilibrium, equatorial, equanimity, equivocal, equivocation, equilateral
42. equ- horse: equine, equestrian
43. *–er 1) comparative: bigger, earlier 2) agent of an action, person or thing [also –ar, -or]: reader, washer, lighter, silencer, boiler 3) wind: norther, souther 4) someone related to [-yer after w]: hatter, banker, tinner, lawyer, sawyer 5) resident of some place: New Yorker, Icelander 6) repeated or continuous action: clatter, sputter, stutter, chatter（不影響重音）
44. *–ern 1) adj. of n. of directions: eastern, northern 2) place: cavern, saltern, lectern （不影響重音）
45. –err- wander: error, erratic, errant, aberrant, inerrable, aberration
46. *–ery 1）place: fishery, brewery, tannery, monastery 2) act: bribery, surgery, robbery 3) product or goods: pottery 4) state or condition: slavery, drudgery（不影響重音）
47. erythr- red: erythremia
48. *es- see ex-
49. *–esc- becoming: acquiescent, convalescent, crescent, adolescent
50. *–esence the process of becoming or beginning: obsolescence, adolescence （重音’escence） /es[ns/
51. *–escent: 1) giving off light or showing a color: phosphorescent 2) adj. of n. ending in –escence: convalescent （重音’escent） /es[nt/
52. *–ese n. or adj. f nationality or language: Chinese, Vietnamese, officialese （重音’-ese）/i:z/
53. –esque adj. arabesque, Kafkaesque （重音-esque）/esk/
54. –ess indicating being a female: waitress, poetess, goddess （不影響重音）
55. *–est 1) superlative: biggest 2) old form of 2nd person singular [or -st]: wanderest, dost （不影響重音）
56. *–et n. diminutive: eaglet, packet, circlet（不影響重音）
57. –eth old form of 3rd person singular [or -th]: riseth, doth （不影響重音）
58. *ethno- nationality [ethn- before a vowel]: ethnography, ethnic
59. *–etic adj. of n. ending in –esis or –y: mimetic, pathetic, antipathetic, epileptic, theoretic, energetic （重音’etic）/etik/
60. *–ette female or diminutive: novelette, cigareete, typette（重音’ette）/et/
61. *–ety n. piety, propriety, sobriety, gayety, variety（重音’- ety）/[ti/
62. *eu- good: eulogy, eulogize, euphonious, euphemism, eugenics, euphonious
63. –eur person: amateur, litterateur, saboteur （重音’eur）/[:/
64. *Euro- European: Europarliament
65. *–ev- age, time: primeval, medieval, longevity, coeval
66. *ex- 1) forth, from, out 2) beyond 3) away from 4) thoroughly 5) upward 6) without, not having
[e- before b, d, g, j, l, m, n, r, v]: egregious, elated, emissary, elongate
[ec- before c, s]: eccentric, ecstasy
[ef- before f]: effect, effeminate, effluence
[es- in words of French origin]: estrange
[otherwise ex-]: expectorate, expect, execute, expose, extract, export
67. *ex- former: ex-president, ex-wife, ex-premier
68. exo- outer: exocardia, exosphere, exogamy
69. *extra- [positive]; extern- [comparative]; extreme- [superlative] out: extraordinary, extralegal, extracurricular, external, extremist
70. *–ey see –y
71. –fabul- speak: fabulous, fable, confabulate, fabulous, effable, confabulation
72. –fac- face: surface, deface, facial
73. *-facil- easy: facility facile, facilitate, difficult
74. *–fact-, -fect-, -fic-, -feat-, -feas-, -fit do, make: factory, benefactor, beneficiary, benefit, feasible, affect, suffice, indefeasible, proficiency, manufacture, malefactor, facsimile, factual
75. *-faction n. of some v. ending in –fy: satisfaction, liquefaction, rarefaction, stupefaction （重音faction）/fAkF[n/
76. *–fall-, -fals- deceive: fallacy, infallible, fallacious, falsify
77. –fam- 1) fame: famous, infamous, infamy 2) hunger: famished, famine
78. *–fashion in the stated manner: Indian-fashion
79. –fatig- tire out: indefatigable, fatigue
80. -febri- fever: febrifuge, febricula
81. *–feder- alliance: federation, federal, confederacy, antifederal, federalize
82. –felic- happy: felicity, felicitation
83. *–femin- woman: feminine, effeminate
84. *–fend-, -fens- strike: offensive, defend, defense
85. *–fer-, -lat- bring, carry: refer, confer, relate, translate, transfer, difference, conference, offer, prefer, preferable, aquiferous, superlative, sublate, collate, collation, ablate, prolate
86. –feroc- fierce: ferocious, ferocity
87. *–ferous that produces: auriferous, carpoferous
88. ferro- iron: ferroheme, ferroalloy, ferromagnetic
89. –ferv- boil, glow: fervid, fervor, perfervid, effervesce, effervescent, fervent
90. –fest- celebration: festival, festivity, festal
91. fibr- fiber: fibrination, fibrosis, fibrous
92. *–fic adj. specific, beatific, pacific, terrific, horrific （重音’- fic）/fik/
93. *–fication n. of v. ending in –ify: signification, intensification, classification, simplification （重音-fi’cation）/fikeiF[n/
94. *–fid- faith: confidence, fidelity, confide, confidant, affidavit, perfidy, perfidious, diffidence, fideism, infidel
95. *–fier agent of an act [of v. ending in -fy]: signifier, amplifier, pacifier（不影響重音）
96. –fil- thread, line: file, defile, filar, filament, profile
97. *–fix- fasten: transfix, fixture, prefix, suffix, affix
98. *–fig-, -fict- shape, make: figure, configuration, disfigure, figurative, fiction, fictive, nonfiction, disfiguration, transfiguration
99. –fili- son: filial, affiliate
100. *–fin- end: final, confine, confinement, definitive, definite, finalist, finis, finale, finish, definite, infinite, infinitive, finitude, infinity, undefined, confinement
101. –firm- firm: confirmation, reaffirm
102. –flamm- flame: inflammable
103. –flat- blow [v]: inflate, inflationary, deflate, inflationary, conflation, reflate, flatus
104. flav- yellow: flavonone, flavescent
105. *–flect-, -flex- bend: reflect, deflect, reflex, reflection, inflection, flex, flexible, flexuous
106. *–flict- strike: inflict, conflict, affliction, inflictive
107. *–flor-, -flour- flower: flora, florist, florid, flourish, efflorescence, floret, deflower, defloration
108. *–flu- flow: affluent, influence, confluence, fluency, influenza, fluid, refluence, defluent, superfluous
109. fluoro- [fluor- before a vowel] 氟，熒光: fluoroscope, fluorite
110. *–fold of the stated number or times: manifold, twofold，fourfold （不影響重音）