A blunt pencil. knife. etc. is not sharp and therefore not able to write. cut. etc. well.

saying what you think without trying to be polite or considering other people`s feelings.

to make something less sharp

to make a feeling less strong.

a large cigarette or cigar containing the drug cannabis

saying what you think without trying to be polite or caring about other people’s feelings.

not having a sharp edge or point.

to make something less strongly felt.