Along with reducing the number of uses of several words that are considered archaic, the KJV completely removed some archaic, antiquated, rare, unusual, unclear, or difficult words or spellings along with a few other words found in one or more of the pre-1611 English Bibles of which it was a revision. In addition, the KJV also removed, did not retain, or no longer used some words that would not be considered archaic today.
A list of words in the pre-1611 English Bibles, which are not found in the KJV, would include the following: “ableness” (2 Cor. 3:5), “abrech” (Gen. 41:43), “achat” (Exod. 39:12), “advoutry“ (Mark 7:21), “affianced” (Luke 1:27), “afterbirth“ (Deut. 28:57), “albs” (Lev. 8:13), “arb” (Lev. 11:22), “arede” (Mark 14:65), “assoyl” (Matt. 21:24), “badge“ (Acts 28:11), “beneficial“ (Acts 19:24), “beweep“ (Deut. 21:13), “boldened“ (1 Sam. 13:12), “brain pan“ (Jud. 9:53), “breastlap” (Exod. 25:7), “bruterer” (Exod. 25:7), “buballs” (1 Kings 4:23), “buggers” (1 Tim. 1:10), “bugle“ (Deut. 14:5), “bugs“ (Ps. 91:5), “byss” (Gen. 41:42), “calamite” (Exod. 30:23), “carrion“ (Lev. 5:2), “cavillation” (Luke 19:8), “cavillations“ (Lev. 19:13), “chevisance” (Deut. 21:14), “childishness“ (1 Cor. 13:11), “christened“ (1 Cor. 1:14), “clippers“ (1 Sam. 25:11), “commonalty“ (Lev. 4:13, “conjurers“ (Dan. 4:7), “consistory“ (Ps. 107:32), “cowcasins“ (Ezek. 4:15), “cratch” (Luke 2:7), “credence“ (Acts 8:12), “cressets“ (Jer. 25:10), “deadoffering“ (Lev. 3:6), “debite” (Luke 20:20), “deedslayers” (2 Kings 14:6), “delectation“ (2 Cor. 12:10), “despicions” (Acts 28:29), “discomforted“ (Ezk. 13:22), “diseasest“ (Mark 5:35), “disposers“ (1 Cor. 4:1), “dissembling“ (Prov. 12:19), “doe“ (Prov. 6:5), “door checks [or cheeks]” (Isa. 6:4), “dukedoms“ (Gen. 36:30), “effusion“ (Heb. 11:28), “egalness” (2 Cor. 8:14), “emmets“ (Prov. 30:25), “endote” (Exod. 22:16), “equalness“ (2 Cor. 8:14), “erewhile“ (John 9:27), “examinedst“ (Rev. 2:2), “excellentness“ (Ps. 96:6), “expounders“ (Jer. 27:9), “fardels” (Acts 21:15), “field devils“ (2 Chron. 11:15), “fiend“ (Mark 5:15), “flackered“ (Ezek. 10:19), “flacket” (1 Sam. 16:20), “flaggy” (1 Sam. 15:9), “flawnes” (1 Chron. 23:29), “felicity” (Gal. 4:15), “foreby“ (Lam. 1:12), “fore elders“ (Prov. 22:28), “fortuned” (2 Chron. 5:11), “fortunes“ (2 Kings 21:6), “fraudulent“ (Ps. 119:134), “frayles” (1 Sam. 25:18), “frumenty” (Lev. 23:14), “gabis“ (Job 28:18), “galaries“ (Ps. 73:4), “gaoler” (Acts 16:23), “gardes“ (Deut. 22:12), “ghostly“ (Rom. 8:5), “gloriousness“ (1 Cor. 2:1), “gorgeousness“ (Isa. 3:18), “grece” (Acts 21:35), “groveling“ (1 Sam. 17:49), “hagab” (Lev. 11:22), “harborous” (1 Tim. 3:2), “harbourless” (Matt. 25:35), “hargol” (Lev. 11:22), “healthoffering“ (Lev. 4:26), “heavengazers” (Isa. 47:13), “hedgehog“ (Lev. 11:30), “hoared“ (Josh. 9:4), “hucklebone“ (Gen. 32:25), “huswiferie“ (Prov. 31:18), “idiot“ (Job 5:2), “Iims“ (Jer. 50:39), “inquirance“ (Acts 10:17), “inconvenient“ (1 Pet. 4:4), “inconvenience“ (Acts 28:6), “interrupted“ (1 Pet. 3:7), “intolerable“ (Exod. 8:24), “invocation“ (Ps. 89:26), “ixion“ (Deut. 14:13), “jakes” (2 Kings 10:27), “lamia“ (Isa. 34:14), “lamies“ (Lam. 4:3), “latten“ (Gen. 31:42), “library“ (Ezra 6:1), “ligurious“ (Exod. 28:19), “lither“ (Rom. 12:11), “loured” (Gen. 4:5), “luck“ (Gen. 30:11), “lucky“ (Gen. 39:2), “lusty bloods“ (2 Sam. 13:28), “lute“ (Ps. 144:9), “maidenhead“ (Jud. 11:38), “male stewes“ (1 Kings 15:12), “manchet” (1 Kings 4:22), “mandragoras” (Gen. 30:14), “manslaughter“ (Hos. 4:2), “manward“ (Titus 3:4), “maund” (Exod. 29:3), “meekened“ (2 Chron. 33:19), “meinie” (Gen. 22:3), “meked“ (James 3:7), “mercifulness“ (Rom. 12:1), “mirror” (2 Cor. 3:18) “moon prophets” (Isa. 47:13), “mossell” (1 Cor. 9:9), “muzzling” (Deut. 32:2), “naughtipacks“ (Ps. 86:14), “nebb“ (Gen. 8:11), “neverthelater“ (Lev. 7:24), “nigard“ (Isa. 32:6), “nightcrow“ (Lev. 11:16), “obstinate“ (Jer. 5:23), “ohim“ (Isa. 13:21), “overbody“ (1 Sam. 23:9), “overhand“ (Hos. 4:2), “overscaped” (Lev. 19:10), “overthwart” (Deut. 32:5), “overwinner“ (1 Sam. 15:29), “panier“ (Job 41:7), “parbreak” (Num. 11:20), “partlets“ (Acts 19:12), “pecks“ (Gen. 18:6), “penance“ (Matt. 3:8), “pensiveness“ (Ps. 77:3), “perceavaunce“ (Eph. 1:8), “perquellies” (2 Sam. 5:8), “pismire” (Prov. 6:6), “pitfall“ (Job 18:10), “plage” (Deut. 17:8), “pleck” (Lev. 13:4), “porphyry” (Est. 1:6), “possessioner“ (Micah 1:15), “puissant“ (Ps. 93:4), “pyght“ (Heb. 8:2), “querne” (Isa. 47:2), “quier” (1 Kings 6:5), “raynes“ (Rev. 19:8), “rebecks” (1 Sam. 18:6), “recreate“ (Ps. 94:19), “redebush” (Isa. 9:16), “redshanke“ (Deut. 14:16), “roomth“ (2 Sam. 22:20), “rugagates” (Jud. 12:4), “sallets” (Jer. 46:4), “scrale” (Exod. 8:3), “seameaw“ (Lev. 11:16), “selaam“ (Lev. 11:22), “sethim” (Deut. 10:3), “shalms“ or “shawms” (Ps. 98:6), “shope” (Gen. 2:7), “shrewd“ (Ps. 83:3), “simnel” (Exod. 29:23), “simulation“ (James 3:17), “slade” (1 Sam. 25:20), “slops” (Isa. 3:20), “smaragdus“ (Exod. 28:17), “Sodomward“ (Gen. 13:22), “soleam” (Lev. 11:22), “spangles“ (Num. 31:50), “springalds“ (Dan. 1:4), “stackered“ (Rom. 4:20), “stellio“ (Lev. 11:30), “succourless“ (Prov. 31:8), “Sunday“ (1 Cor. 16:2, Rev. 1:10), “taxus” (Exod. 25:4), “terebinths“ (Isa. 6:13), “toot-hill“ (Gen. 31:48), “transitory“ (Prov. 31:8), “treacle” (Jer. 8:22), “tufts” (Lev. 19:27), “tushe“ (Job 39:25), “tyranny“ (Job 3:17), “tyrants“ (Job 6:23), “unfainedness“ (2 Cor. 8:8), “unghostly“ (1 Tim. 4:7), “unhealeth“ (Deut. 27:20), “unhele” (Lev. 18:16), “unlust“ (Isa. 43:22), “unquiet“ (Deut. 28:65), “unquietness“ (Acts 24:18), “unright“ (Gen. 16:5), “unshodhouse“ (Deut. 25:10), “unthrifts“ (1 Sam. 30:22), “untractable“ (Titus 1:6), “untruss” (Isa. 47:2), “untruth“ (Ps. 89:35), “uplandish“ (Jud. 5:11), “valiantness“ (Ps. 18:32), “voluptuousness“ (Titus 3:3), “wastels“ (Lev. 24:5), “wealthiness“ (Job 21:13), “weaponed“ (Prov. 6:11), “wenest” (Acts 8:20), “whale fish” (Job 7:12), “wherethrough“ (Dan. 2:1), “Whitsuntide“ (1 Cor. 16:8), “whore keeper” (Deut. 23:17), “winegardeners“ (2 Chron. 26:10), “withoutforth“ (1 Chron. 26:29), “witsafe“ (Ps. 119:29), “workmasters“ (Jer. 24:1), “worthies“ (1 Chron. 11:26), “yonderward” (1 Sam. 20:37), and “zijm“ (Isa. 13:21).
The above list does not include the many words in Wycliffe's Bible that are not used in the KJV.