Gwyntiad, n. ventilation
Gwyntio, v. to blow
Gwyntog, a. windy, full of wind
Gwyntyll, n. a ventilator
Gwyntylliad, n. a ventilating
Gwyntyllio, v. to ventilate
Gwynu, v. to whiten, to bleach
Gwynwg, n. whiteness
Gwynwy, n. white of egg
Gwynwydd, n. the willows