思い出す
おもいだす (omoidasu)
to remember, to recall
verb (godan)
Example
昔の友達の名前を思い出せません。
むかしのともだちのなまえをおもいだせません。
Mukashi no tomodachi no namae wo omoidasemasen.
I can't remember my old friend's name.
Often confused with 覚える (oboeru). 思い出す means to recall something already learned, while 覚える means to learn/memorize something new.