Translation guide
To ignore, pay no attention to, or treat something as unimportant. Japanese uses different expressions depending on whether you are ignoring a rule, a person's words, a warning, or a feeling.
He disregarded my advice.
You must not disregard traffic lights.
Noun form, often used in compounds like 無視する (to ignore).
His behavior is a complete disregard.
To let something go in one ear and out the other, to pay no heed to what someone says. Used specifically for disregarding spoken words.
She disregarded his insults (let them go).
To not mind, to not care about. More about emotional disregard than active ignoring.
I disregard what others think.
To consider something not worth attention, to dismiss or brush off.
To make light of, to underestimate or treat as trivial. Often used for disregarding risks, rules, or important matters.
You must not disregard safety regulations.
Also used for dismissing something as unimportant, though it leans more toward active ignoring.
To set aside, to disregard as irrelevant (often in calculations or considerations). Formal and somewhat literary.
To intentionally not follow a rule, law, or instruction.
Commonly used for ignoring rules, traffic signals, orders, etc.
He disregarded his boss's orders.
To not obey, to not comply. More direct about disobedience.
Those who disregard the rules will be punished.
To break (a rule, promise, law). Stronger than 'disregard', implies violation.
To push aside or ignore one's own feelings or physical sensations.
Can be used for ignoring pain or emotions, though it may sound a bit blunt.
He kept running, disregarding the pain.
To suppress or stifle (emotions, laughter, etc.). More about internal suppression than ignoring.
To not let it bother you. Softer than 無視する.
I disregard minor inconveniences.
無視する means to actively ignore or pretend not to see/hear. 軽視する means to underestimate the importance of something, to treat it lightly. You can 軽視する a risk without actively ignoring it; 無視する implies a more deliberate act of turning away.
to underestimate the danger
to ignore the danger (and proceed anyway)
If you mean 'I don't care about what people think', 気にしない is more natural than 無視する. 無視する sounds like you are actively blocking them out, which can be too strong.
He disregarded my opinion.
Pursue quality disregarding cost.
法律を破ってはいけない。
You must not disregard the law.
He disregarded his emotions (suppressed them).