betwixt and between, neither the one nor the other; in a middle or unresolved position:
Not wanting to side with either her father or her mother, she was betwixt and between.
Origin
before 950;Middle Englishbetwix,Old Englishbetwix, betweox, equivalent to be-be- + tweox, cognate with Old High Germanzwiski two each; akin to Germanzwischen between (preposition)
British Dictionary definitions for betwixt and between
betwixt and between, in an intermediate, indecisive, or middle position
Word Origin
Old English betwix; related to Old High German zwiski two each
Word Origin and History for betwixt and between
betwixt
prep., adv.
Old English betweox "between, among, amidst, meanwhile," from bi- "by" (see be-) + tweox "for two," from Proto-Germanic *twa "two" + *-isk "-ish." With parasitic -t that first appeared in Old English and became general after c.1500.
Idioms and Phrases with betwixt and between
betwixt and between
Undecided, midway between two alternatives, neither here nor there. For example, I'm betwixt and between canceling my trip entirely or just postponing it, or Jane is betwixt and between about accepting the offer. The adverb betwixt, originally meaning “by two,” is seldom heard except in this expression, first recorded in 1832.