Read the dictionary definition of curt. All definitions for this word.
1. brief and to the point; effectively cut short
1. a crisp retort
2. a response so curt as to be almost rude
3. the laconic reply; `yes'
4. short and terse and easy to understand
2. marked by rude or peremptory shortness
1. try to cultivate a less brusque manner
2. a curt reply
3. the salesgirl was very short with him
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Merriam-Webster definition of curt