(informal) To be delighted with one's good fortune.

(medicine, informal) When diagnosing a patient's symptoms, common ailments should be considered as more probable than rare ones.

One who spends time thinking, contemplating or meditating. / An intellectual, such as a philosopher or theologian. / (slang) The brain, mind. / (slang) A poser; a conundrum that requires some thinking.

(slang) A careless mistake made in thinking.

Able to be thought or imagined; conceivable. / (rare) Morally acceptable or legal.

Alternative spelling of freethinker

(archaic) third-person singular simple present indicative form of think

(archaic) second-person singular simple present form of think

plural of thinko

plural of thinker