adj., in old poets contr. before a vowel, and changing the g into k, máttkar, máttkan, máttkir; compar. máttkari, máttkastr, mod. máttugri, máttugastr; [Ulf. mahetteigs = δυνατός; Engl. mighty; Germ. mächtig]:—mighty; máttkar meyjar, Gs. 1; sá inn máttki munr, Hm. 93; máttkan moldþinur, Vsp. 59; með máttkom Kristi, Lex. Poët.; fjögur konunga-ríki hafa máttkust verit, Ver. 35:—able, máttugr afspring at geta, Stj. 26: al-máttugr, almighty; ú-máttugr, weak; á-máttigr, q. v. (p. 43, col. 2), perhaps, however, these words are rather akin to Ulf. anamahtjan = βιάζειν, and thus to mean overbearing, and then = hideous, horrible, as an epithet of trolls and giants.