Synonyms for Seasick:

adj.

nauseous (adjective)
ill, sick.

n.

bring up, cloy, bilious, disgorge, chuck up, come up, bloated. nauseated (noun)
miserable, suffering from mal de mer.
seasick (noun)
carsick, ill, sick, airsick.

Other synonyms:

n.
airsick, carsick, disgorge, sick.
n. t.
disgorge, sick.