Be a stoolie is an informal phrase that means to act as an informant or snitch. It is derived from the word 'stool pigeon, ' which is a bird used by hunters to lure other birds. The crossword solutions for this term are TATTLE (6 letters), BLAB (4 letters), and NAMENAMES (9 letters). TATTLE means to gossip or reveal secrets, while BLAB means to talk too much or indiscreetly. Namenames refers to the practice of revealing someone's identity by giving out their name. All three words refer to the act of providing information, either intentionally or unintentionally.