Briefly
From BiblePortal Wikipedia
Vine's Expository Dictionary of NT Words [1]
1: Διά (Strong'S #1223 3641 — Preposition — di' oligon — dee-ah' )
lit. means "by few." In 1—Peter 5:12 it signifies by means of few words, "briefly." The RV of Romans 13:9 omits "briefly," the meaning being "it is summed up."
King James Dictionary [2]
BRIE'FLY, adv. Concisely in few words.
Webster's Dictionary [3]
(adv.) Concisely; in few words.