“+ adjective
Etymology: un- (I) + established, past participle of establish
: not firmly based
a reputation as yet unestablished
a. : having little or no previous success ; specifically : not yet published
short stories by unestablished writers — Atlantic
b. of a church : not made a national or state institution
c. Britain : outside the permanent or regular staff of a business or institution
an unestablished post
an unestablished appointment