burn, burned (burnt), burned (burnt)

Is it "burned" or "burnt"?

American English: burn, burned, burned
British English: burn, burnt, burnt

American English:
In American English, "burnt" is used only as an adjective, while "burned" is used as the past tense and past participle verb.

British English:
Traditionally, in British English "burnt" was more common as the past tense and past participle of "burn", but "burned" has gained popularity in recent years.

Canada:
Follows American English conventions, where "burned" is preferred as the past tense and past participle, while "burnt" is mainly used as an adjective.

Australia, New Zealand, South Africa:
Similar to British English, both "burned" and "burnt" are acceptable as past tense and past participle forms, though "burnt" is often preferred.

Summary
In general, in the U.S. and Canada, "burned" is the standard past tense and past participle form, while "burnt" is reserved for adjectives. However, in British English, Australian, New Zealand, and South African English, "burnt" tends to be more widely accepted as a past tense verb, past participle, and an adjective.

Example

• He burned the old letters in the fireplace.
• The chef accidentally burned the steak while cooking.
• She burned her hand while taking the cookies out of the oven.
• They burned the midnight oil to finish their project.

• The toast was completely burnt and inedible.
• His fingers smelled of burnt wood after the campfire.
• The forest was covered in burnt trees after the wildfire.
• She had a burnt taste in her mouth after drinking the coffee too hot.
• Does burnt toast cause cancer?

• He burnt his hand while cooking.
• They burnt all the old documents to destroy sensitive information.

The meaning of "burn"