noctambulous
adjective
noc·tam·bu·lous
(ˈ)näk¦tambyələs
: of, relating to, or given to walking by night
given way to noctambulous habits 
Times Literary Supplement
Times Literary Supplement
Word History
Etymology
noctambulation + -ous
- undemonstrativenesses
- undeniable
- undeniableness
- undeniablenesses
- undeniably
- undenied
- undenominational
- undenominationally
- undependabilities
- undependability
- undependabilityes
- undependabilitys
- undependable
- undependablenesses
- undependably
- undepressed
- undeprivable
- under
- under (a strain
- under (a/the) strain
- under (someone's) tutelage
- under (the) cover of darkness/night
- under a cloud of suspicion
- under a doctor's care
- under a microscope