| A | B |
|---|
| ex-, e-, ef-, etc. | ex. expel, exasperate, eloquent, evade, efficient out, from, completely |
| extra-, extro- | ex. extraordinary, extrovert outside, beyond |
| in-, im, (ig- before n) | ex. ineffective, imminent, immoral, impartial, illegal, irresponsible, ignoble, ignore not |
| in-, im-, [en-], [em-] | ex. inject, impose, impel, illuminate, irrigate, endure, embrace in, into, againts |
| infra- | ex. infrared below, beneath |
| inter- | ex. interrupt, intercept between, among |
| intra-, intro- | ex. intramural, intravenous, introduce within |
| non- | ex. nonresident not |
| ob- | ex. obstruct, obstacle, occur, offer, oppress toward, against, completely, face-to-face |
| per- | ex. permeate, persecute, perfect, perjury through, wrongly, completely |
| CRUC- | ex. crucify, crux cross |
| GREG- | ex. congregate, segregate flock, herd |
| HAB-, AB-, (HIB-) | ex. habit, dishabille, able, inability, inhibit to have, hold as customary |
| PED- | ex. pedal, impediment, pedestrian foot |
| PUNG-, PUNCT- | ex. puncture, punctual to prick; point |
| SACR-, (SECR-) | ex. sacrament, desecrate sacred |
| SANCT- | ex. sanctify, santimonious holy |
| SENT-, SENS- | ex. sentiment, consent, sensation to feel, think |
| TURB- | ex. perturb, turbulence disturb |
| VERT-, VERS- | ex. revert, aversion to turn |
| VI(A)- | ex. via, previous way, road |
|
