Both "learned" and "learnt" are valid past tense forms of the verb "learn." In the U.S., however, "learned" is much more common.

Both "learned" and "learnt" are valid past tense forms of the verb "learn." In the U.S., however, "learned" is much more common.

Olivia learned to drive when she was 19.

In the UK and other Commonwealth countries, "learnt" is frequently used.

Alice learnt a new technique for solving that math problem.

"Learned" can also be an adjective, referring to someone who is well-educated or has a lot of knowledge. In this context, "learnt" cannot be used.

The learned professor shared his insights on ancient civilizations.

The learnt professor shared his insights on ancient civilizations.