Same word as queerest:

anomalous, atypical, bizarre, crazy, curious, demented, disquieting, doubtful, droll, dubious, eccentric, eerie, erratic, extraordinary, fishy, flaky, fly ball, freaky, funny, idiosyncratic, irrational, irregular, kinky, kooky, mad, mysterious, oddball, off the wall, outlandish, outr�, peculiar, puzzling, quaint, questionable, remarkable, shady, singular, strange, suspicious, touched, unbalanced, uncanny, uncommon, unconventional, unhinged, unnatural, unorthodox, unusual, wacky, weird