critical
/ˈkri-ti-kəl/
adjective
inclined to criticize severely and unfavorably
consisting of or involving criticism; also : of or relating to the judgment of critics
exercising or involving careful judgment or judicious evaluation
Don't be so critical. This is just a first attempt.
critical writings
noun
the least angle of incidence at which total reflection takes place
noun
the monitoring and treatment of critically ill or injured patients : intensive, care
a designated area of a hospital providing critical care : intensive care unit —often hyphenated when used before another noun
Critical care involves the use of life-sustaining, high-technology medicine catering to a patient population that extends to both extremes of age. In adult ICUs, the average age is increasing and is now commonly well over 60 years.