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.
chew over · conjecture · contemplate · excogitate · hypothecate · hypothesise · hypothesize · job · meditate · mull · mull over · muse · ponder · reflect · ruminat · suppose · theorise · theorize · think over
(angestrengt) nachdenken · (sich) das Hirn zermartern · (sich) den Kopf zerbrechen · brüten (über)