Syndig

According to the Old English Dictionary:

syndig

adj. Skilled in swimming (?):--Sum byþ rynig; . . .sum on londe snel, féðe spédig; sum fealone wǽg stefnan steóreþ . . . ; sum biþ syndig, Exon. Th. 296, 28; Crä. 58. I, II, and cf. Icel. syndrable to swim. syndig

Related words: sund,