WordNet records no synonym and no antonym for kwajalein. It is the only member of each of its synsets, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an atoll in the western Marshall Islands that was used as a Japanese air and naval base during World War II
an amphibious assault in the Pacific in World War II (January 1944); American forces landed and captured a Japanese air base
Synonyms, antonyms and the broader and narrower relations for kwajalein come from Princeton University’s WordNet. Full sources and licences.