Officiate, informally 3 letters

Crossword clues for Officiate, informally 3 letters:

REF: Officiate, informally
REF: Sports official, informally
REF: Official, informally
REF: Soccer official, informally
REF: Official with a whistle, informally
REF: Officiate a football game, informally
UMPS: Diamond officials, informally
REFS: Basketball officials, informally
UMPS: Home plate officials, informally
ZEBRA: Gridiron official, informally
THEUS: Country that lacks an official language, informally
CERT: Official document, informally
REFS: Officials showing 50-Across, informally
SIGEP: First national fraternity to officially welcome transgender members (2014), informally
OPENSECRET: *Officially restricted yet widely known information