seasickness seasick • seaside · · · Info · Definitions · Synonyms · Characters · · seasickness · · Text Latin · · Script 11 · · Length Definitions · · · (noun) motion sickness experienced while traveling on water. Synonyms: mal de mer, naupathia. · · Noun Definition 1 Synonyms · · · mal de mer · · Synonym 1 naupathia · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B n latin small letter n U+006E s latin small letter s U+0073