Concis.
ETYM Latin concisus cut off, short, p. p. of concidere to cut to pieces; con- + caedere to cut; perh. akin to scindere to cleave, and to Eng. shed, v. t.; cf. French concis.
Expressing much in few words.
ETYM Latin Laconicus Laconian, Greek, a Laconian, Lacedaemonian, or Spartan: cf. French laconique.
Brief; briefly stated, often to the point of being unclear.
Curt; in few words; unemotional.