Contrarily, any other way, and at another time are all synonyms for otherwise. Similarly and consequently are antonyms of otherwise. And here are 14 another word for otherwise.
Any other way, at another time, contrarily, differently, diversely, elseways, if not, in different circumstances, on the other hand, or else, or then, under other conditions, and variously are all synonyms for otherwise.
Otherwise synonym page has a variety of synonyms that differ in length. 1 synonym with 5, 8, 9, 10, 13, 14, 20, and 24 letters and 2 synonyms with 6, and 11 letters. For a total of 12 another word for otherwise.
Finish your homework; otherwise, no dessert.
You must leave now; otherwise, you'll be late.
She must apologize; otherwise, friendships suffer.
Follow the instructions; otherwise, mistakes happen.