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Webster 1913 Edition
Somnambulistic
Som-namˊbu-lis′tic
,Adj.
Of or pertaining to a somnambulist or somnambulism; affected by somnambulism; appropriate to the state of a somnambulist.
Whether this was an intentional and waking departure, or a
somnambulistic
leave-taking and walking in her sleep, may remain a subject of contention. Dickens.