from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To meditate on a subject; reflect.
- intransitive v. To engage in a course of reasoning often based on inconclusive evidence. See Synonyms at think.
- intransitive v. To engage in the buying or selling of a commodity with an element of risk on the chance of profit.
- transitive v. To assume to be true without conclusive evidence: speculated that high cholesterol was a contributing factor to the patient's health problems.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. to think, meditate or reflect on a subject; to deliberate or cogitate
- v. to make an inference based on inconclusive evidence; to surmise or conjecture
- v. to make a risky trade in the hope of making a profit; to venture or gamble
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To consider by turning a subject in the mind, and viewing it in its different aspects and relations; to meditate; to contemplate; to theorize
- intransitive v. To view subjects from certain premises given or assumed, and infer conclusions respecting them a priori.
- intransitive v. To purchase with the expectation of a contingent advance in value, and a consequent sale at a profit; -- often, in a somewhat depreciative sense, of unsound or hazardous transactions.
- transitive v. To consider attentively.
from The Century Dictionary and Cyclopedia
- To view as from a watch-tower or observatory; observe.
- To take a discriminating view of; consider attentively; speculate upon; examine; inspect: as, to speculate the nature of a thing.
- To pursue truth by thinking, as by mathematical reasoning, by logical analysis, or by the review of data already collected.
- To take a discursive view of a subject or subjects; note diverse aspects, relations, or probabilities; meditate; conjecture: often implying absence of definite method or result.
- To invest money for profit upon an uncertainty; take the risk of loss in view of possible gain; make a purchase or purchases, as of something liable to sudden fluctuations in price or to rapid deterioration, on the chance of selling at a large advance: as, to speculate in stocks.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
- v. to believe especially on uncertain or tentative grounds
- v. invest at a risk
- v. reflect deeply on a subject
Latin speculārī, speculāt-, to observe, from specula, watchtower, from specere, to look at; see spek- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin speculātus, past participle of speculor ("look out"), from specula ("watchtower"), from specio ("look at") (Wiktionary)