Climacteric(adjective)
(Having extreme and far-reaching implications or results; critical.)
Hindi meaning:संकटकालीन/अत्यावश्यक
Synonyms: Critical, Defining, Crucial, Decisive, Significant
Antonyms: Unimportant, Insignificant
Example: In climacteric situations, Most of the times Dhoni finished the matches in a superb ways.
Trick to remember: Acha climate Climacteric hota hai fitness ke liye. 
