v.
Pronunciation: ' fla-t ə n
Function: verb
Inflected Form: flat · tened ; flat · ten · ing \ ' flat-ni ŋ , ' fla-t ə - \
Date: 1630
transitive verb : to make flat: as a : to make level or smooth b : to knock down also : to defeat decisively c : to make dull or uninspired ― often used with out d : to make (as paint) lusterless e : to stabilize especially at a lower level
intransitive verb : to become flat or flatter: as a : to become dull or spiritless b : to extend in or into a flat position or form c : to become uniform or stabilized often at a new lower level ― usually used with out
– flat · ten · er \ -n ə r \ noun