From Old Irish ·aicci (“sees”), prototonic form of ad·cí, from Proto-Celtic *ad-kʷiseti, from Proto-Indo-European *kʷeys- (“observe”). The initial f- of the modern form comes from the misinterpretation of aic- as lenited fhaic-.
- to see
|Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.