Like a tooth that's about to fall out (5)
I believe the answer is:
loose
(Other definitions for loose that I've seen before include "Not firmly fixed" , "Hanging" , "Slack; not exact" , "poor fit?" , "Relaxed; not tethered" .)
I believe the answer is:
loose
(Other definitions for loose that I've seen before include "Not firmly fixed" , "Hanging" , "Slack; not exact" , "poor fit?" , "Relaxed; not tethered" .)