v. t. | 1. | To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. | ||||||
2. | To throw down; to bring to the ground; to prostrate; hence, to depress; to deject; to dispirit. | |||||||
3. | To make vapid or insipid; to render stale. | |||||||
4. | (Mus.) To lower the pitch of; to cause to sound less sharp; to let fall from the pitch.
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v. i. | 1. | To become or grow flat, even, depressed, dull, vapid, spiritless, or depressed below pitch. |
Verb | 1. | flatten - make flat or flatter; "flatten a road"; "flatten your stomach with these exercises" |
2. | flatten - become flat or flatter; "The landscape flattened" Synonyms: flatten out | |
3. | flatten - lower the pitch of (musical notes) Synonyms: drop Antonyms: sharpen - raise the pitch of (musical notes) |