Oxford Advanced American Dictionary

Definition of otherwise adverb from the Oxford Advanced Learner's Dictionary

Oxford3000

otherwise

adverb
otherwise pronunciation English ˈʌðəwaɪz otherwise pronunciation American ˈʌðərwaɪz
 
1 used to state what the result would be if something did not happen or if the situation were differentMy parents lent me the money. Otherwise, I couldn't have afforded the trip.Shut the window, otherwise it'll get too cold in here.We're committed to the project. We wouldn't be here otherwise.2 apart from thatThere was some music playing upstairs. Otherwise the house was silent.He was slightly bruised but otherwise unhurt.3 in a different way to the way mentioned; differentlyBismarck, otherwise known as ‘the Iron Chancellor’It is not permitted to sell or otherwise distribute copies of past examination papers.You know what this is about. Why pretend otherwise (= that you do not)?I wanted to see him but he was otherwise engaged (= doing something else).
Idioms

or otherwise

used to refer to something that is different from or the opposite of what has just been mentioned
It was necessary to discover the truth or otherwise of these statements.We insure against all damage, accidental or otherwise.
more at know different/otherwise at know verb