antic, basic, comic, cubic, conic, havoc, lyric, music, mimic
Those are the words I could think of on the spot.
Bikes.
bayou, adieu
Some five letter words with the last letter O are:achooaudiobanjobingobimbobongobravoburrocargocellocombocondocredodingodiscodittogeckoguanogustoHellohippohydroigloojumbokazoolassolimbolingomachomangomottonachopatiopestophotopianopintoprontoradioRatiorhinorodeoromeosalvoschmostenotabootangotempotorsoturbowackowazooyahoo
A five letter word that is the opposite of the word "gradual" and contains a second letter of "l" is a popular word game answer. The five letter word being sought is "fleet."
being
A five letter word with the third letter O and the last letter C is stoic.
human
"Grade" is one word.
thighwhichshush
aloud, cloud,
Five letter words with the second and fourth letter O are:boronbosomcocoacoloncolordonorhonormoronmotorrobotrotor
gallant