Wiktionary
unseamanlike
a. Not characteristic of or befitting a seaman.
WordNet
unseamanlike
adj. not seamanlike [ant: seamanlike]
Usage examples of "unseamanlike".
The hawsers and the hairy cablets did indeed look heavy, lumpish and untidy with these Irish pennants all along - not perhaps unseamanlike, but something that no crack spit-and-polish ship could bear for a moment.