English to English verb
1 |
make flat or flatter | | Example: flatten a road flatten your stomach with these exercises
source: wordnet30
2 |
become flat or flatter | | Example: The landscape flattened
source: wordnet30
3 |
lower the pitch of (musical notes) | | source: wordnet30
4 |
To reduce to an even surface or one approaching evenness; to make flat; to level; to make plane. | | source: webster1913
5 |
To become or grow flat, even, depressed, dull, vapid, spiritless, or depressed below pitch. | | source: webster1913
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