For a very specific example, say you have a software developer who makes some changes to a product, then does no testing of the changes and then releases the product only to find that the customer finds the product no longer works. The person is too hasty and not diligent enough to follow a careful process.

  • I think the answer is in your question: "hasty". Collins Cobuild : If you describe a person or their behaviour as hasty, you mean that they are acting too quickly, without thinking carefully,
    – Patrick D
    Dec 5, 2020 at 10:14
  • 1
    Impulsive is a word that comes to mind. Not consulting other members of the team. Do these other members help or hinder?
    – Xanne
    Dec 5, 2020 at 10:31
  • Generally, the person is careless. Dec 5, 2020 at 10:40
  • This question was precipitately closed. The answer to which closure refers is incomplete in respect of the relevant vocabulary. I have voted to reopen.
    – Anton
    Dec 5, 2020 at 14:32
  • Welcome! Please read the following: "single-word-requests This tag is for questions seeking a single word that fits a meaning. To ensure that your question is not closed as off-topic, please be specific about the intended use of the word. INCLUDE A SAMPLE SENTENCE demonstrating how the word would be used." One reason for the existence of this rule is so we can know whether you want a noun, a verb, or an adjective. (This probably explains why your question was closed) Thanks. Dec 9, 2020 at 17:43

3 Answers 3


Three words come to mind. All have connotations of haste and unfortunate consequences.

Precipitate = If an action is precipitate, it is done sooner or faster than expected and without enough thought or preparation “Don't be precipitate - think it through before you make a decision.”

Cambridge dictionary

Impetuous = likely to do something suddenly, without considering the results of your actions

Cambridge dictionary

Rash = careless or unwise, without thought for what might happen or result

Cambridge dictionary

You may also like to research foolhardy and (for a bit of pretension) temerarious, although I think them slightly less suitable for your specification.


The person's work is slipshod. Lexico has


Characterized by a lack of care, thought, or organization.

Having witnessed the slipshod management here, it is not surprising the programmes they run result in little success.

This covers the OP's specific case where the person isn't only hasty:

The person is too hasty and not diligent enough to follow a careful process.

  • I like slipshod. Very appropriate. should have thought if that one myself! Slovenly work.
    – Anton
    Dec 10, 2020 at 10:01

I totally agree with impetuous and impulsive. You need something that discloses the irresponsibility and unprofessionalism of that software developer, so you would rather choose a more 'caustic' adjective.

I would also suggest

incautious and imprudent, why not superficial or spur-of-the-moment. I also like overhasty and overconfident

I guess it depends on which connotation you want to emphasise.

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