[adj] marked by a tendency to find and call attention to errors and flaws; "a critical attitude"
[adj] characterized by careful evaluation and judgment; "a critical reading"; "a critical dissertation"; "a critical analysis of Melville's writings"
[adj] being in or verging on a state of crisis or emergency; "a critical shortage of food"; "a critical illness"; "an illness at the critical stage"
[adj] (chemistry and physics) at or of a point at which a property or phenomenon suffers an abrupt change especially having enough mass to sustain a chain reaction; "a critical temperature of water is 100 degrees C--its boiling point at standard atmospheric pressure"; "critical mass"; "go critical"
[adj] forming or having the nature of a turning point or crisis; "a critical point in the campaign"; "the critical test"
[adj] urgently needed; absolutely necessary; "a critical element of the plan"; "critical medical supplies"; "vital for a healthy society"; "of vital interest"
[adj] of or involving or characteristic of critics or criticism; "critical acclaim"
acute, appraising(a), captious, carping, caviling, censorious, dangerous, decisive, deprecative, desperate, dire, discriminative, evaluative, faultfinding, grave, grievous, hypercritical, indispensable, judicial, nitpicking, overcritical, pettifogging, qu