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.
From G1722 and G5177; to chanceupon, that is, (by implication) conferwith; by extension to entreat (in favor or against)
KJV Usage: deal with, make intercession.
From G1909 and G5177; to chanceupon, that is, (by implication) attain
KJV Usage: obtain.
From G2095 and a derivative of G5177; wellfated, that is, fortunate; Eutychus, a young man
KJV Usage: Eutychus.
From G3844 and G5177; to chancenear, that is, fallinwith
KJV Usage: meet with.
From G4862 and G5177; to chancetogether, that is, meet with (reach)
KJV Usage: come at.
A primary verb (in a strengthened form); to “thump”, that is, cudgel or pummel (properly with a stick or bastinado), but in any case by repeated blows; thus differing from G3817 and G3960, which denote a [usually single] blow with the hand or any instrument, or G4141 with the fist [or a hammer ], or G4474 with the palm; as well as from G5177, an accidental collision); by implication to punish; figuratively to offend (the conscience)