a-thrill,advb.phr.|əˈθrɪl| [a prep.1 + thrill.] In a thrill, thrilling. 1879Cornh. Mag. May, Susanna i, Hedges seem trembling with life..the whole place is athrill.1881E. Arnold Ind. Poetry 101 Then Jymul's supple fingers..Set athrill the saddest wire of all the six.