quietShe's a quiet little thing.
taciturnHer father was a shy, taciturn man.
abruptHe is criticised for being too abrupt with his clients.
terseI don't appreciate how terse she is in meetings.
shortI'm sorry I was so short with you, but I was under a lot of stress.
laconicformalMy uncle has quite a laconic wit.
not waste wordsShe doesn't waste words - if she agrees with you, she'll just say that.