Synonyms of between

1 Syllable
in, mid
2 Syllables
middler, amidst, halfway, within, midmost, among, amongst, midway, medial, soso, mezzo, amid, 'tween, betwixt
3 Syllables
middlemost, centermost, inserted, medially
4 Syllables
separating, transitional, intervening
5 Syllables
intermediate, interpolated