Im-pul-sion, ffwyrad, gyrawd
Im-pul-sive, dirgymhellawl
In-car-nate, mewn cnawd
In-cen-tive, cynhyrfiad; cynnyrfiol
In-ces-sant, dibaid, didor
In-ci-dence, damwain, dygwyddiad
In-ci-dent, damweiniol
In-cis-ion, haciad, toriad
In-cite-ment, annogiad
In-cle-ment, gerwin, afrywiog