知る, 識る, しる
Conjugated: 知ってる
Godan verb, Transitive
1. to know, to be aware (of), to be conscious (of), to learn (of), to find out, to discover
2. to sense, to feel, to notice, to realize
3. to understand, to comprehend, to grasp, to appreciate
4. to remember, to be familiar with, to be acquainted with
5. to experience, to go through, to know (e.g. hardship)
あなたは1990年から彼女を知っているのですか?