Temporary
WordNet
adjective
(1) Lacking continuity or regularity
"An irregular worker"
"Employed on a temporary basis"
(2) Not permanent; not lasting
"Politics is an impermanent factor of life"- James Thurber
"Impermanent palm cottages"
"A temperary arrangement"
"Temporary housing"
noun
(3) A worker (especially in an office) hired on a temporary basis