noun

1. A critical value, factor, etc.

2. In breakdancing, a kind of airflare move in which the dancer hops from one hand to the other.

adjective

1. Inclined to find fault or criticize

   “A good teacher is fair but critical.”

2. Pertaining to, or indicating, a crisis or turning point.

   “This is a critical moment.”

3. Extremely important.

   “It's critical that you deliver this on time.”

Synonyms: captious, censorious, exacting, fastidious