Origin: 1500–10; < AF
brevite, OF
brievete. See brief, -ity 
Synonyms:
2. compactness, succinctness, pithiness. Brevity, conciseness refer to the use of few words in speaking. Brevity emphasizes the short duration of speech: reduced to extreme brevity. Conciseness emphasizes compactness of expression: clear in spite of great conciseness.
Antonyms:
1, 2. length.
[brev-i-tee] 