The opposite of work is play, or possibly rest.
play
work
job
Work
eat
A three letter word for consumed is ate.
now ?
sip
A three letter synonym for a verse is ode.
A three letter synonym for the exclamation 'gosh' is gee.
nee
A three letter synonym for 'present' is now.
Gob is a synonym for a seaman.
The word is "arc", although that is not the only possible meaning of that work. For example, in graph theory, an arc is a synonym for an edge of a graph.
There is no synonym for 3.
3 letter work beginning with ex