Strong's Greek Concordance

G3379: μήποτε

mḗpote · “lest”

Definition

not ever; also if (or lest) ever (or perhaps)

KJV translates it as: if peradventure, lest (at any time, haply), not at all, whether or not

Word origin: from G3361 (μή) and G4218 (ποτέ);

Extended definition

μήποτε
(= μή ποτε, and so written in WH, exc. Mat.25:9),
negative particle, related to οὔποτε as μή to οὐ.
1. As neg. particle, never: Heb.9:17 (R, mg., but see infr.; WH, txt., μή τότε).
2. As conjc., lest ever, lest haply (the idea of chance rather than of time seems to prevail in NT) : Mat.4:6 (LXX) Mat.5:25 7:6 13:15" (LXX), Mat.13:29 15:32 27:64, Mrk.4:12" (LXX) Mrk.14:2, Luk.4:11 12:58 14:12, 29, Act.28:27; after verbs of fearing or taking heed, Luk.21:34, Heb.2:1 3:12 4:1; with ellipse of the verb or ptcp., Luk.14:8, Act.5:39; in later writers (see M, Pr., 192 f.), perhaps, Mat.25:9.
3. As interrogative;
(a) in direct questions, like μή, expecting a negative answer: Jhn.7:26, Heb.9:17, (R, txt., cf. Westc., in l; but see supr.);
(b) in indirect questions, whether haply, if haply: Luk.3:15, 2Ti.2:25.†
(AS)

Abbott-Smith Manual Greek Lexicon (1922) via STEPBible TBESG (CC BY 4.0).