If you describe a person or their behaviour as hasty, you mean that they are acting too quickly, without thinking carefully, for example because they are angry.
2. done with very great haste and without due deliberation;
"hasty marriage seldom proveth well"- Shakespeare"hasty makeshifts take the place of planning"- Arthur Geddes"rejected what was regarded as an overhasty plan for reconversion""wondered whether they had been rather precipitate in deposing the king"