haste /heɪst/ BrE AmE noun [uncountable]
[ Date: 1200-1300 ; Language: Old French ]
1 . great speed in doing something, especially because you do not have enough time SYN hurry :
I soon regretted my haste.
in your haste to do something
In his haste to leave, he forgot his briefcase.
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In everyday English, people usually say hurry rather than haste :
▪
In my hurry, I left my coat behind.
2 . in haste written or formal quickly or in a hurry:
They left in haste, without even saying goodbye.
3 . make haste old use to hurry or do something quickly
4 . more haste less speed British English , haste makes waste American English used to say that it is better to do something slowly, because if you do it too quickly you will make mistakes