ˈinsularly,adv. [f. as prec. + -ly2.] After the manner of an island or islander. 1856in Webster.1867H. Kingsley Silcote of S. xlvii. (1876) 347 Are you insularly stupid?1882Standard 17 Mar. 4/8 Of whose virtues these ‘brumous isles’ are insularly ignorant.