think of,
remember look on as or consider; "she looked on this affair as a joke"; "He thinks of himself as a brilliant musician"; "He is reputed to be intelligent"
unlearn discard something previously learnt, like an old habit
lose fail to win; "We lost the battle but we won the war"
leave leave unchanged or undisturbed or refrain from taking; "leave it as is"; "leave the young fawn alone"; "leave the flowers that you see in the park behind"
forget -
forget to do something; "Don't forget to call the chairman of the board to the meeting!"