Enter a clue or pattern or both:
The Clue
It keeps things on the level (4 letter answer)
The Answer
SHIM
Tags
Notes
The answer SHIM is uncommon, appearing about once every 400 puzzles.
Related Clues
Level
A leveler
Wedge
Alignment piece
Carpenter's leveler
Carpenter's wedge
Filler of a sort
Leveling wedge
Machine wedge
Masonry wedge
Mason's wedge
Slender wedge
Space filler
Table leveler
Thin strip
Thin wedge
Wedge of a sort
Wooden wedge
Carpentry spacer
Thin slip of wood
Thin wedge of wood
Wedge-shaped piece
Builder's wedge-shaped piece
One just filling up space
Definition
SHIM as a noun:
1. a thin wedge of material (wood or metal or stone) for driving into crevices