Related Clues:
- Not even this will do wrong with a twitch
- Not the regular thing to do wrong with a twitch
- Er lumber room sounds not a regular place
- Unstable enough to make a mistake at one hundred
- Funny oval Scrabble piece that's changeable
- Liable to change unpredictably
- Liable to lead to sudden change
- Not even little by little, a traitor infiltrated
- Likely to blow up rodent about to turn tail
- Capricious boy about to betray one's trust
- Wayward vermin found in Morecambe?
- Wayward boy squashing vermin
- Idle, broken by desert, becomes unstable
- Irregular - eccentric
- Irregular and unreliable