Not as long

• More concise
• Not as long-winded
• More blunt and to the point
• More laconic
• Less long-winded
• Not as longwinded
• More apothegmatic
• Less lengthy

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Terse \Terse\, a. [Compar. Terser ; superl. Tersest .] [L. tersus, p. p. of tergere to rub or wipe off.] Appearing as if rubbed or wiped off; rubbed; smooth; polished. [Obs.] Many stones, . . . although terse and smooth, have not this power attractive. ...