English
Etymology
Ellipsis of can do nothing but hope and can do naught but hope.
Verb
can but hope (third-person singular simple present can but hope, no present participle, simple past could but hope, no past participle)
- (UK, dated) To be unable to do anything (about something) other than hope [with that (+ clause); or (informal) with clause; or with so or (negative) not]; especially with long odds.
- We can but hope that he returns alive.