alternative; another; other; different
There's no other way/no alternative; It's the only solution
I had no alternative/choice but to obey; I couldn't do anything else but obey
Faster than any other computer
It's one thing to talk, it's another to act
otherwise
We'll have to invite everyone, we can hardly do otherwise
Unless otherwise stated
unlike
I'm sure he's unlike his brothers
else
I'm sure nobody else can do it
I haven't got anywhere else to go; I've got nowhere else to go