OVERHASTY
hasty, overhasty, precipitate, precipitant, precipitous
(adjective) 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”
Source: WordNet® 3.1
Etymology
Adjective
overhasty (not comparable)
Too hasty.
I realized that I had been overhasty in selecting a dance partner when my toes were trodden on yet again.
Source: Wiktionary
O"ver*has"ty, a.
Definition: Too hasty; precipitate; rash.
– O"ver*has"ti*ly, adv.
– O`ver*has"ti*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition