Hasty
WordNet
adjective
(1) Excessively quick
"Made a hasty exit"
"A headlong rush to sell"
(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"