To make smaller in any manner; to reduce in bulk or amount; to lessen; -- opposed to augment or increase.
- To make smaller or less or to cause to appear so.
- To detract from the authority, reputation, or prestige of.
- To cause to taper.
- Music To reduce (a perfect or minor interval) by a semitone.
- To become smaller or less. See Synonyms at decrease.
- To taper.