Translation guide
How to express sudden intensification, outburst, or recurrence in Japanese, depending on whether it's fire, emotion, conflict, or a medical condition.
Describing a fire that suddenly burns more brightly or strongly.
Literally 'blaze up', the most direct equivalent for flames flaring up.
The fire suddenly flared up.
Describing anger, passion, or other emotions suddenly becoming stronger.
Metaphorical 'anger flares up', using the same verb as for fire.
Anger flared up at his words.
Emotions become heightened or excited; often used for sudden surges.
Emotions flared up during the match.
Colloquial for suddenly getting angry, like 'fly off the handle'.
He flares up easily.
Describing fights, arguments, or unrest suddenly starting or intensifying.
Formal term for outbreak of war, conflict, or trouble.
A conflict flared up at the border.
Literally 'reignite', used for conflicts or controversies that flare up again.
The debate flared up again.
Intensify or escalate, often for conflicts or situations.
Protests flared up.
Describing symptoms, pain, or illness that suddenly become worse or return.
English 'flare up' is highly metaphorical. Directly translating with fire-related words (燃え上がる) for emotions or conflicts is natural in Japanese, but for medical or social contexts, use specific terms like 再発 or 勃発.
The fever flared up again.