1.   The work burns your muscles and dulls your mind.

2.   Their minds are not dulled by the drivel of the media.

3.   They dull the mind with their coarseness and to creativity give no sanction.

4.   Unlike alcohol, which can make people boisterous or belligerent, kava users report that the herb calms them without dulling the mind or causing hangovers.

5.   Watching television without let or hindrance dulls the mind, deadens the senses and makes you fat.