• short e sound (/prɛ/): precedent, president, present (here and now, gift), presence, preference, press, pressure, precious, premise, prejudice, prep, pretzel, preface, presage, predator, predecessor, preferable, prevalent, pregnant, prelude, preparation, presentation, preposition, premonition, prescient
• short i sound ( /prɪ/): prevail, prepare, precarious, precaution, present (to introduce, to show, to give), represent, pretend, prevent, prefer, preserve, preservative, precipitate, predict, prediction, prescription, predicament, preliminary, premiere (premier vs. premiere), precise, preside, prescribe, predominate, predominant, prerogative, preponderance, precocious, presume, preclude, pretax, comprehensive
• long e sound: prefix, premium, premier (premier vs. premiere), preview, prebrief, prescreen, prerelease, prepublication, prepress, preprint, predate, prehistoric, prewar, preseason, pregame, previous, preexist, precept, pretext, prequel, precede, preamble, predinner, pre-meal, pretrip, preflight, preconvention, preschool, preteen, prepubescent, preadolescent, preoccupy, preordain, predestination, precursor, precognition, predisposition, preconceive, prefabricate, prefab, prepackage, prejudge, predetermine, predefine, preplan, prelaunch, preestablish, prearrange, preassign, preset, preload, predigest, preprocess, presort, preselect, predesignate, presift, premeasure, prefill, prebake, precook, preseasoned, preportioned, prebuttered, preheat, pretreat, premoisten, presoak, prewash, preshrink, prefinish, precondition, precomputed, prepopulate, preprogram, preconfigure, preinstall, prebuild, premade, prerecord, premix, precut, predrill, preorder, prepurchase, prepay, preowned, preconcert, prerequisite, preregister, pretest, prequalify, preauthorize, preapprove, presuppose, premarital, prenuptial (prenup), prenatal, prerational, premature, predispose, premeditate, pretrial, preposterous, precinct, preamplifier (preamp), prefrontal, premolar, prediabetic, precancerous, predecease, prebiotic, pre-med (premed), pre-election (preelection), pre-eminent (preeminent), pre-empt (preempt), pre-emptive (preemptive), pre-existing (preexisting) (以 pre 為字首的複合詞通常寫為一個字，除非後面接的單字是 e 開頭，則加連字號比較易讀。)
* The prefix pre- usually means "before" (在...之前), e.g. prehistoric.