Related Clues:
- With 3 Down, Certs alternative
- Idiosyncratic quirk
- Start of a simple game name
- Sign of anxiety, perhaps
- Spasm geneticist conceals
- First "O" in a game
- Son opening unwanted mail in sudden attack
- First of three X's
- ___ Tacs
- First syllable of a kids' menu game
- Word one of three involving X's and O's
- Twitch irregularly — or regularly — with this
- Bit of a jerk
- Involuntary jerk, e.g
- Little bit of personality