Similarity of adj underarm

1 sense of underarm

Sense 1
underhand (vs. overhand), underhanded, underarm -- (with hand brought forward and up from below shoulder level; "an underhand pitch"; "an underhand stroke")

Synonyms of adv underarm

1 sense of underarm

Sense 1
underarm, underhand -- (with the hand swung below shoulder level; "throwing a ball underarm")