Awyrgylch, n. atmosphere
Awyro, v. to air, to make air
Awyrog, a. pneumatic aërial
Awyrogaeth, n. pneumatics
Awyrolaeth, n. pneumatics
Awyroldeb, a. airiness
Awyroli, v. to become airy
Awyrydd, n. an aërostatist
Awyryddiaeth, n. aërostation
Awys, n. general invitation; marriage rites