Synonyms:
- blind bargain,
- borderline case,
- chance,
- chance at odds,
- contingency,
- double contingency,
- even break,
- even chance,
- fair shake,
- fifty-fifty,
- gamble,
- gambling chance,
- guess,
- half a chance,
- matter of chance,
- odds,
- open question,
- piece of guesswork,
- potluck,
- potshot,
- question,
- random shot,
- sight-unseen transaction,
- sporting chance,
- square odds,
- standoff,
- toss,
- toss-up,
- undecided issue,
- wager