A — 1: τάχα
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(Strong's #5029 — Adverb — tacha — takh'-ah )

primarily "quickly" (from tachus, "quick"), signifies "peradventure" in Romans 5:7; in Philemon 1:15 , "perhaps." See PERHAPS.

B — 1: μήποτε
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(Strong's #3379 — Conjunction — mepote — may'-pot-eh, may pot'-eh )

often written as two words, usually signifies "lest ever, lest haply, haply;" in indirect questions, "if haply" or "whether haply," e.g., Luke 3:15 , RV; in Matthew 25:9 , RV, "peradventure" (AV, "lest"); "if peradventure," in 2—Timothy 2:25 . See HAPLY.