(informal) I understand.

present participle of see red

present participle of see the light

Synonym of look-see (“audition for visual appraisal”)

Used to indicate that the speaker hopes the listener understands what is being said.

present participle of see out

(followed by a clause) To experience in one's lifetime.

present participle of see the day

(idiomatic, intransitive) To confirm a doubted claim by directly examining it.

present participle of see for oneself