Here are a few words that were in use till about 250yrs ago.Edit
gaintake - take back
gainclap/ gainstrike - counterstrike
gainbuy - redeem (deposits/ cash back)
gainstand - oppose
gainsay - contradict *This is the only verb still in regular use*
- Good ones. I think it's all right noting "gainst-". Wouldn't overnote it though. Morgoth Bauglir 13:59, November 8, 2010 (UTC)
On a personal note, concerning 'gain-' words, I was wondering whether it would make sense to add the intrusive '-st' (ie. gainst eg gainstbuy) into these words so as to make them more instantly recognisable. Ok, so it's not absolutely etymologically correct in development, but I feel that it would make it easier for more people to more naturally adopt that which looks familiar to them.