Wiktionary
bittiest
a. (en-superlativebitty)
WordNet
bitty
adj. (used informally) very small; "a wee tot" [syn: bittie, teensy, teentsy, teeny, wee, weeny, weensy, teensy-weensy, teeny-weeny, itty-bitty, itsy-bitsy]
bittiest
See bitty