second, back, endorse, indorse - give support or one's approval to; "I'll second that motion"; "I can't back this plan"; "endorse a new project" --3is one way tosupport, back up
bet on, back, gage, stake, game, punt - place a bet on; "Which horse are you backing?"; "I'm betting on the new horse" --7is one way tobet, wager, play Sample sentences: Somebody ----s something Somebody ----s on something