This word can be seen a synonym of "demand", but usually it is used as adjective.

Let me see

Ups, my English is poor, could you please give me some hints?

require?

回复 @圆环之理：nope, the adjective is required, but this word use the same spelling while in verb or in adjective.

回复 @圆环之理：This word isn't too long.

回复 @啊啊是谁都对：How many letters?

回复 @圆环之理：Shorter than the word you've said

exact?

回复 @圆环之理：Yes! That's right!