nothing to worry about

: not any thing : no thing

: no part

: one of no interest, value, or consequence

: not at all : in no degree

: something that does not exist

: the absence of all magnitude or quantity

: nothingness, nonexistence

: of no account : worthless

: choke, strangle

: to harass by tearing, biting, or snapping especially at the throat

: to shake or pull at with the teeth

: mental distress or agitation resulting from concern usually for something impending or anticipated : anxiety

: an instance or occurrence of such distress or agitation

: a cause of worry : trouble, difficulty