underpromote

Verb

underpromote (third-person singular simple present underpromotes, present participle underpromoting, simple past and past participle underpromoted)

1. (transitive) To promote inadequately.
   • It was a teen party sponsored by the hip-hop radio station Hot 97 (WQHT-FM), and maybe an underpromoted one: much of the room was empty.2009 September 21, Jon Caramanica, “Do the Jerk: Skinny Jeans and All That Bouncy, Bawdy Id”, in New York Times
2. (transitive) To promote (a pawn that has crossed the board) to a less powerful piece than a queen, which is sometimes strategically useful.