BY NIGHT

Afrikaans

snags (at night). (various references)

Czech

v noci (at night, nightly). (various references)

Dutch

's nachts (at night, during the night). (various references)

Esperanto

nokte (at night). (various references)

Faeroese

um náttina (at night, during the night). (various references)

Finnish

yö yllätti meidät (we were overtaken by night). (various references)

French

nuitamment. (various references)

Frisian

nachts (at night, during the night). (various references)

German

nachts (at night). (various references)

Greek 

την νύχτα. (various references)

Hungarian

éjjel (at night, at night-time), éjszaka folyamán (in the night), éjjelente (every night, nights, o'nights). (various references)

Italian

di notte (at nighttime, nightly, overnight). (various references)

Manx

er oie (nightly, under cover of night). (various references)

Papiamen

anochi (at night, during the night, in the evening). (various references)

Pig Latin

ybay ightnay.(various references)

Portuguese

à noite (at night, in the evening). (various references)

Romanian

noaptea (in the night, nightly), în timpul nopţii. (various references)

Russian 

ночью (at night), под покровом ночи (under cloud of night). (various references)

Spanish

rondador (fly by night). (various references)

Swedish

om natten (at night, during the night). (various references)

Turkish

geceleyin (at night, in the night, nightly, nocturnally, overnight), gece (night). (various references)

Zulu

ebusuku (at night, during the night). (various references)