n m. and f. * ad-sem-, Wortk. 53 . `?Lat. essentia', Plummer MS notes.

(a) characteristic, special quality, peculiarity: a.¤ in finda sin `the peculiarity of that hair', Fél.² cxliv 35 . rosuithe dó dáma (glossed dana) deacta .i. do a.¤ na deachta, LU 756 (ACC) = RC xx 178 § 45 . hi ḟail in tobair ingnáith dianad a.¤ óigread in cech lo, Alex. 349 . inis . . . ise a h-aisdi na cuirp berar inti ni lobait iter, Todd Nenn. 192.9 . ar besaib ┐ ar caen-estib (sic) (com-aistib v.l., leg. caem-a.¤ good qualities), Cog. 82.2 . inund aisti arúath dúinn, / inund gasced gnath, TBC-LL¹ 4172 ( LL 11005 ). is í a.¤ in chuilén-sin, PH 3438 . mórad ceall dob aisde agaibh (to St. Patrick), Dán Dé xii 13 . mōr d'aistib na n-ērlam fúair, ACL iii 307 § 28 . a.¤ gach céime i gcalmacht / gaisce féile is flathamhlacht, Hackett liii 23 . ni heiccen co mad aisdi do ierraidh do litrip ind ogaim ┐ do muitib na Laitne, ar is a nguthagoip forbaigter-side do gres a common nature, property, need not be sought for in Ogham letters and Latin mutes, since the latter always terminate in a vowel-sound (whereas the former do not), Auraic. 3015 .

Type, variety, class (of performance): dona cēadaistibh reapraidh dō, Feis Tighe Chonáin 227 . doghníadh C. aisde crábaidh C. used to practise a special kind of devotion, BNnÉ 141.1 is anaichnidh do muintir C. . . . ind a.¤ trialltai .i. teiched, CCath. 3563 . m'ionuath a aisde dá éis `very horrible his fate thereafter', Dán Dé xxvi 53 . iollardacht m'aisdeadh the variety of my talents, ML 124.6 . atá d'aistidhibh 's d'ealadhain nódh aca nach taobhtha d'aonneach . . . they have so many wiles and arts that none can trust them (of women), Hackett xxvi 63 . Pattern: im a.¤ lamthoraid, Laws i 150.8 .i. fuath in gresa innti, 152.23 Comm. Cf. a.¤ ab astilis ō slisnib corthaire, O'Mulc. 64 . way, manner: gurob é aisde ar a mbídís 'na suidhe, Geneal. Tracts i 39.12 .

With prepp. ar a.¤ like: ar a haisde is aghtha dhamh / brath leannáin dom lucht diomdhadh, O'R. Poems 2917 `just like her must I hope to find a lover', p. 229 . ar gach én a.¤ on every ground, BNnÉ 250 § 204 . Seonin a Burc do marbad arin asti cetna, Ann. Conn. 1342.4 . ar aisde na dinginn se in a way in which I could not achieve it(?), BNnÉ 132.z . fo a.¤ like: luin gela bid ann . . . ┐ celebraid a tratha fo aisti na heclaise, Trip. xliii 5 . fo aisti an Gregaid, Auraic. 3379 . tar a.¤ : rala ág dar [a] a.¤ / ra chuir ár (ar) na cichloiste beyond what he was used to, TBC-LL¹ 1477 .

(b) metre: cia lín na naisti . . . a cuíc sescat ar trí cetaib, IT iii 67 § 1 . cate a aisti coír cach baird, 22 § 67 . aisteda na ndaerbhard, 23.1 . it núacrutha na haisti seo, ar it núalitríde arrangatar íat, § 68. aisti ollaman bairdni inso anuas . . . aisti ansrutha bairdne inso sís, 10 § 12 , § 13 . iss hi seo ind a.¤ blaith brass / in ṅgnathaighther in senchass, 106.18 . cia a.¤ triasin ṅdernad in Félire . . . rindard, Fél. 4.24 . isin erlabra fégtair inna haisti, LU 461 (ACC). sluindfet duib dagaisti in dana, LL 5227 . dechnad mór . . . a.¤ is ferr i nHere, 5250 . ellach .i. aisti, ut est cibe cenel dina secht n-eillghibh .i. dona secht n-aistibh, O'Dav. 765 . co festar in n-aisti dona seacht primellgibh na filideachta, Auraic. 1687 . claechlodh aisdi change of metre, IGT Metr. Faults § 22 . i n-aisde 's i n-ábhacht, recitations, Hackett² xliii 240 .