I am looking for a specific word that describes how someone would continuously do something that they think is good for themselves, but is really the opposite. What I mean by that is: whenever you do something that you think is good, but it actually harms you. For instance, people who drink diet sodas; they THINK it's good for them, but it's really not. However, they continue to do it. In simple words, it is whenever someone thinks what they are doing benefits them, but it doesn't. Help?

To answer livresque, it's a word that described someone; an adjective. "My friend is a(n) [unknown word] because he wants to drink diet soda, but he doesn't know it's bad for him."

To answer DjinTonic, it's not quite misinformed, though it could be. It was a very philosophical term one of my teachers briefly explained to me, but I just can't remember what it was. Without trying to be condescending, I doubt anyone here will guess it, I'm asking for a very specific term, one that not many people have heard.

To answer HippoSawrUs, I'm thinking about this in the context of a complex topic, much more complex than diet sodas (I just used the analogy to simplify it). I can be about a topic that affects a large group of people. For instance, let's take the United States economy vs environment debate: Should the US focus more on its economy or more on its environment? Most people would argue for the latter, but they don't necessarily know the impacts that it would bring upon them. I guess that's what I'm trying to get at, people choose to follow or do something that they think (or sounds) good for them, but they are oblivious to the consequences. And before you say it, no, the word I'm looking for is not obliviousness.

To answer Old Brixtonian, it's not used as an insult much. Although obstinate is on the right path. I'll do more research surrounding that word.

To answer Xanne: refer to people in cults as a more serious example. They think their way is best, and they think their way is right, but in reality, well, you can answer that question.

To answer Elliot: technically, yes, but that is not the word I'm looking for. The definition I provided does not fit the exact definition of disagree, nor does it fall in those lines.

  • 1
    Please include a sample sentence (fill in the blank) showing how the word will be used. What part of speech?
    – livresque
    Nov 2, 2022 at 0:56
  • 1
    Perhaps misinformed?
    – DjinTonic
    Nov 2, 2022 at 1:04
  • 1
    How is it that you know better than they do?
    – Xanne
    Nov 2, 2022 at 2:06
  • >"a very philosophical term..." Pig-headed maybe? Nov 2, 2022 at 2:25
  • 1
    That is someone whom you Disagree.
    – Elliot
    Nov 2, 2022 at 2:57

4 Answers 4


The word you are looking for is "DELUSIONAL" :

Delusional :
Believing things that are not true

Delusion :
A mistaken or unfounded opinion or idea

Eg : Your friend is Delusional , having the Delusion that "Diet Soft Drinks" are good.

In Extreme Cases , it may be a "Psychological Disorder" of some variety.

Eg : The President is Delusional , having the Delusion that Martian Aliens are roaming nearby trying to assassinate everybody.


Jokingly...consider Trumpian. But seriously: misguided

led or prompted by wrong or inappropriate motives or ideals



Counterproductive maybe? But that'd describe their actions more than themself.

  • Hello, and welcome to the ELU. If you look at the [help center]() you will see that on this site we back up our answers with reliable sources like dictionaries or respectable sites. Could you edit to improve your answer?
    – fev
    Nov 3, 2022 at 9:16

Stubborn (Wiktionary) Refusing to move or to change one's opinion; obstinate; firmly resisting; persistent in doing something.

Bullheaded (Wiktionary) unreasonably stubborn.

Pigheaded (Wiktionary) Obstinate and stubborn to the point of stupidity.

Obdurate (Wiktionary) Stubbornly persistent, generally in wrongdoing; refusing to reform or repent.

Edit: If these words won't do, word combinations can be used such as "erroneously persevering fool", "imprudent in his/her ways" etc. I have added a few more words below.

Foolhardy (Wiktionary) Marked by unthinking recklessness with disregard for danger; boldly rash; hotheaded.

Foolish (Wiktionary) Lacking good sense or judgement; unwise.

Imprudent (Wiktionary) Not prudent; lacking prudence or discretion; indiscreet; injudicious; not paying attention to the consequences of one's actions

  • These options all apply to somebody who has been told they are incorrect multiple times but refused to believe it, but the OP seems to be asking about people who haven't been informed they are wrong.
    – nnnnnn
    Nov 3, 2022 at 2:06

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.