antrenn rough ground, gen. antreinn [147].
apaig ripe [68].
ar-cuillim I destroy, ruin [184.]; verb-noun, gen. aircaillti, ib. (N).
ard-nemed m. a high dignitary [157].
árech (árach) (1) a tie, fetter, gen. cú áraig [168.]; (2) a bond, surety, acc. pl. cen áirche [74.]; cin gealladh, cin airge, Laws II. 78, 4.
argius instruction (?), a. aiste [256]. Cf. felmac fri ré na argaisi, Laws V. 364, 17.
aroslicim I open, aroslicet [204].
árus residence, habitation [218], [239].
ata which are [68], [69], [75], [76], &c.
ataid (?) [181].