in English is:

artfulness

,

cleverness

Mutations

Soft:glyfrwch
Nasal:nghlyfrwch
Aspirate:chlyfrwch

Use

y clyfrwch hwn
fy nghlyfrwch i
dy glyfrwch di
ei glyfrwch ef/o
ei chlyfrwch hi
ein clyfrwch ni
eich clyfrwch chi
eu clyfrwch nhw/hwy
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