Definitions for overhasty
Random House Webster's College Dictionary
hasty, overhasty, precipitate, precipitant, precipitous(adj)
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"
Origin: over- + hasty