- reaching the knees: knee-deep mud.
- submerged or covered up to the knees: knee-deep in water.
- deeply embroiled; enmeshed; involved: knee-deep in trouble.
- so deep as to reach or cover the kneesknee-deep mud
- (postpositive often foll by in)
- sunk or covered to the kneesknee-deep in sand
- immersed; deeply involvedknee-deep in work