svikall

a. treacherous (jarl var útrúr ok s. við vini ok úvini).

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mod. svikull, adj., contr. sviklar, Gd. 49; inn svikli, Flóv. 36; but svikalir, Hkr. iii. 227; svikalasta, Anecd. 100, as also in mod. usage:—treacherous, Fær. 138, Fms. i. 219, passim.