Based on sound judgment and reasonable inference; with one's proper justifications; on good grounds.

plural of motivated reasoning

(idiomatic) Without any apparent cause or justification.

(idiomatic) Expressing uncertainty for the cause or justification of some event or happening.

The phenomenon of seeking out rational arguments in favor of a conclusion already reached for non-rational (chiefly emotional) reasons.

Alternative form of age of reason

Alternative form of raising piece (“wall plate”)

(law) A fictional person used as a comparative legal standard to represent an average member of society and how he or she would behave or think, especially in determining negligence; sometimes formulated as "a person of ordinary prudence exercising due care in like circumstances."

The process of making inferences based upon observed patterns, or simple repetition. Often used in reference to predictions about what will happen or does happen, based upon what has happened.

Determining plausibility based on a set of evidence.