Probably from G142 (through the idea of drawing a conclusion); a particle denoting an inference more or less decisive (as follows)
KJV Usage: haply, (what) manner (of man), no doubt, perhaps, so be, then, therefore, truly, wherefore. Often used in connection with other particles, especially G1065 or G3767 (after) or G1487 (before).
KJV Usage: he that, if a (-ny) man (‘s thing, from any, ought), whether any, whosoever.
From G1909 and G1487; thereupon, that is, since (of time or cause)
KJV Usage: because, else, for that (then, -asmuch as), otherwise, seeing that, since, when.
Probably for an obsolete τύχω tuchō (for which the middle voice of another alternate τεύχω teuchō [to makeready or bringtopass ] is used in certain tenses; akin to the base of G5088 through the idea of effecting; properly to affect; or (specifically) to hit or lightupon (as a mark to be reached), that is, (transitively) to attain or secure an object or end, or (intransitively) to happen (as if meeting with); but in the latter application only impersonally (with G1487), that is, perchance; or (present participle) as adjective usual (as if commonly metwith, with G3756, extraordinary), neuter (as adverb) perhaps; or (with another verb) as adverb by accident (asitwere)
KJV Usage: be, chance, enjoy, little, obtain, X refresh . . . self, + special.
Including the oblique forms, as well as ἦς ēs ace ; ἦ ē ay , etc.; the subjunctive of G1510; (may, might, can, could, would, must, etc.; also with G1487 and its compounds, as well as with other particles) be
KJV Usage: + appear, are, (may, might, should) be, X have, is, + pass the flower of her age, should stand, were.
A primary particle of qualified negation (whereas G3756 expresses an absolute denial); (adverbially) not, (conjugationally) lest; also (as interrogitive implying a negative answer [whereas G3756 expects an affirmative one]); whether
KJV Usage: any, but, (that), X forbear, + God forbid, + lack, lest, neither, never, no (X wise in), none, nor, [can-] not, nothing, that not, un [-taken], without. Often used in compounds in substantially the same relations. See also G3362, G3363, G3364, G3372, G3373, G3375, G3378.