slackwitted

Example:He was always acute in his observations of the office, noticing every change in behavior and mood.

Definition:Having a keen or sharp intelligence or perception.

Example:The bright students excelled in the advanced programs, continuing their exceptional performance in various fields.

Definition:Having a high degree of intelligence; clever, sharp, quick, or lively.

Example:She was keenly sagacious in her judgments about human nature, always knowing the right course of action.

Definition:Able to discern the true nature or meaning of things quickly; astute, shrewd, discerning.