Poll: Poll: They were ____ guilty.
- Votes: 253
- Comments: 5
- Added: November 2013
- Polls: 1,163
- Votes: 684,619
- Comments: 4,835
Context would be helpful as "proved" means it was found correct this time, but "proven" means that it has become standard - the proof works all the time.
both are used in a passive construction as such both the past participle forms can be used.
Good answer, Richard
So the word "prove" has 2 past participles : "proved and proven"?