Definition of unpucker in US English:

unpucker

verb

  • with object And without object. To stop puckering; to relax (the brow, lips, etc.) from being pursed or wrinkled.

Origin

Late 18th century; earliest use found in John Ash (1724–1779), lexicographer and grammarian. From un- + pucker.

Pronunciation

unpucker

/(ˌ)ʌnˈpʌkə/