adjective
quicker; -est
done or happening in a short amount of time
fast in thinking, learning, or understanding
fast in moving or reacting
tending to do something very quickly or too quickly - followed by to + verb
able to be done, obtained, or achieved easily and in a short amount of time
be quick on the draw
quick off the mark
the quick and the dead
literary :living people and dead people
adverb
quicker; -est
informal :in a fast or quick manner :quickly
noun
cut (someone) to the quick
to make (someone) very upset
the quick
the very sensitive area of flesh under a fingernail or toenail
US