Johnnie-come-lately

Johnny-come-lately

A newcomer or late arrival to a group or activity. The rest of the staff wasn't too fond of Greg, a Johnny-come-lately who received praise from the manager after just one week on the job. Hurry up, Johnny-come-lately, we've already started today's drills!
Farlex Dictionary of Idioms.

Johnnie-come-lately

and JCL
n. someone new to a situation or status. This Johnnie-come-lately doesn’t know what it was like in the old days.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • Johnny-come-lately
  • lately
  • JCL
  • be fond of (someone or something)
  • fond
  • fond of
  • fond of (someone or something)
  • horny
  • like one of the family
  • the silent majority
References in periodicals archive
Okay, the spelling might be slightly differen, and the stakes very slightly lower but Coventry's Johnnie-come-lately reacted in the same cool-headed way as his more famous namesake.