The best way to memorize is

Understanding the concept gives meaningful learning that is retained far longer than mechanical repetition.

Studying for a long time is rote effort without comprehension and fades quickly.

Reading loudly aids attention a little but does not ensure understanding or lasting memory.

Writing the concept helps recall yet is secondary to first grasping its meaning.

David Ausubel contrasted meaningful learning with rote learning, favouring the former.

Meaningful learning works by relating new ideas to the learner's prior knowledge.