to wager one's reputation on sth miser sa réputation sur qch
→ I'll wager my reputation on the outcome of the case.
I'll wager (that) je parie que
→ I'll wager she's still going strong when she's 70.
to be willing to wager (that) être prêt (e) à parier que
→ She was willing to wager he didn't own the apartment he lived in.