Kenneth G. Wilson (1923–). The Columbia Guide to Standard American English. 1993.
debark, disembark (vv.)
These verbs are synonyms, and both can be either transitive or intransitive, meaning “to take or assist people off a ship or plane” or “to get off a ship or plane”: The captain debarked [disembarked] several unruly passengers; at the next port the rest of the passengers disembarked [debarked]. Both are Standard. Compare DE-.
