To agree, verify or concur; to answer positively.
To make firm; to confirm, or ratify; especially (law) to assert or confirm, as a judgment, decree, or order, brought before an appellate court for review.
To state under a solemn promise to tell the truth which is considered legally equivalent to an oath, especially of those who have religious or other moral objections to swearing oaths; also solemnly affirm.
To assert positively; to tell with confidence; to aver; to maintain as true.
To support or encourage.
To exhaust; to tire out.
To crash; to fall over (especially in board sports such as surfing, skateboarding, etc.).
To physically erase (writing, computer data, etc.).
To do away with; to cause to disappear.
To destroy (especially, a large number of people or things); to obliterate.
To knock (a surfer) off their board.
To fall off one's surfboard.