(transitive) To take for granted; to conclude, with less than absolute supporting data; to believe.

(transitive) To theorize or hypothesize.

(transitive) To imagine; to believe; to receive as true.

(transitive, obsolete) To reckon to be, to account or esteem as.

(transitive) To require to exist or to be true; to imply by the laws of thought or of nature.

(transitive) To put by fraud in the place of another.