Crossword puzzle clue "like a heckling crowd"

in the manner of wrong or improper use

to revile or swear at; to use wrongly

BAITER, one who baits

to show disapproval by making this sound, also BOOH

to cry like an owl, also HOUT, WHOOT

HOOT, to cry like an owl, also HOUT, WHOOT

to mock, also GEARE