Off en espanol
How do you say "off" as in turn the lights off, or as in get off the couch in Spanish?
Apaga (Apague - formal) la luz.- Turn off the light.
Levántate (Levántese - formal) - Get up.
As a rule, words like "on", "off", "out", "over" (in other words, prepositions) which form part of a verbal phrase in English are actually part of the verb in Spanish, so there is no extra word.
Examples: "to turn off (lights)" - apagar..."to turn on (lights)" - encender or prender..."to get up, to get off" - pararse or levantarse..."to look for" - buscar..."to fall over, to fall down" - caerse..."to grow up" - crecer...etc.
I hope this has answered your question.
Well, that's two different kinds of 'off'. You could say something like
'Apague las luces y bájese de la sofá'
Agree with mountaingirl but point out that many/most of these verbs also have related meanings without the included (understood) preposition.
Example: "caer" simply to fall, although "caerse" is equally valid and has a slightly changed meaning like "to fall over", "se me lo cayo", "it fell from me" or a more English translation "it fell out of my hand" or even "I dropped it". Anyone who ever had an "empleada" in S America will have heard this one!