To arrive at by conjecture; to infer on slight evidence; to surmise; to guess; to form, at random, opinions concerning.

1. To play games for money.
2. To take a risk in the hope of a favorable outcome; SYN. chance, risk, hazard, take chances, adventure, run a risk, take a chance.

1. To guess correctly; solve by guessing; SYN. infer.
2. To out forward, of a guess; SYN. venture, hazard.

ETYM See Speculation (n.).
1. To indulge in speculations.
2. To invest at a risk; SYN. job.
3. To believe especially on uncertain or tentative grounds; SYN. theorize, theorise, conjecture, hypothesize, hypothecate, suppose.

To infer from incomplete evidence.

1. To express in spite of possible refutation.
2. To proceed somewhere despite the risk of possible dangers; SYN. embark.
3. To put at risk; SYN. hazard, adventure, stake, jeopardize.