adj
usual, habitual(?): math forcenda a thoil ainnas
nacnapthe (= ó indas acnapthe) as bliadain `ut moris est',
Ériu vii 146 § 35
. nech dogni etrath o belaib .iiii. anni
in cetfecht ma gnathach acnapthe .uii. annis
`si fit consuetudo
et usus',
144 § 22
. Cf. accnabad?