Deprecative
Part of speech: adjective
Definition: Tending to deprecate; disapproving.
Critical
Part of speech: adjective
Definition: Inclined to find fault or criticize; fastidious; captious; censorious; exacting.Pertaining to, or indicating, a crisis or turning point.Extremely important.Relating to criticism or careful analysis, such as literary or film criticism.Of a condition involving unstable vital signs and an unfavorable prognosis.Likely to go out of control if disturbed, that is, opposite of stable.Of the point (in temperature, reagent concentration etc.) where a nuclear or chemical reaction becomes self-sustaining.
Example sentence: Every single university student should study philosophy. You need to lead the examined life and question your beliefs. If you don't learn critical thinking, then political debate degenerates into a contest of slogans.