v. spec·u·lat·ed, spec·u·lat·ing, spec·u·lates
1. To engage in a course of reasoning often based on inconclusive evidence; conjecture or theorize.
2. To engage in the buying or selling of a commodity with an element of risk on the chance of profit.
To assume to be true without conclusive evidence: speculated that high cholesterol was a contributing factor to the patient's health problems.
[Latin speculārī, speculāt-, to observe, from specula, watchtower, from specere, to look at; see spek- in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.