1. theorise

verb. to believe especially on uncertain or tentative grounds.


  • speculate
  • conjecture
  • hypothesize
  • suppose
  • retrace
  • formulate
  • hypothesise
  • reconstruct
  • theorize
  • explicate
  • construct
  • expect
  • anticipate
  • hypothecate


  • dedifferentiate
  • stay
  • worsen
  • divest

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Sentences with theorise

1. Verb, base form
Forensic analysis may be used to examine such trace evidence to theorise about the activities of persons unable or unwilling to explain the purpose of their presence at a scene that is being investigated.

2. Noun, singular or mass
Some theorise that it may be due to vitamin D and calcium deficiencies, according to the Connective Tissue Disorders website.

3. Verb, non-3rd person singular present
In humans, they often develop in creases and folds of the skin, or where skin rubs against clothing, so researchers theorise that they may result from such minor friction.