learnt
v.v. to get new knowledge or skills by studying, practicing, or being taught. It is a common spelling in British English for the past tense of 'learn'.
v. to acquire knowledge of or skill in by study, instruction, or experience. This form serves as the past tense and past participle of 'learn', primarily in British, Australian, and New Zealand English.
I learnt how to swim when I was five years old.
She learnt the local dialect quickly by spending every afternoon talking with the shopkeepers in the village square.
Having learnt the fundamental principles of organic chemistry during her undergraduate studies, she felt well-prepared to tackle the complexities of the advanced research project.
From Middle English lernd, lernde, equivalent to learn + -t.
The verb is both transitive and intransitive. In British English, 'learnt' and 'learned' are both acceptable, though 'learnt' is more common for the past tense action.
I have learn many thingsI have learnt many thingsLearners often use the base form instead of the past participle 'learnt' after the auxiliary verb 'have'.