N3 - 確実かくじつ
certainty, reliability, soundness
N3 - 確認かくにん
affirmation, confirmation
N3 - 正確せいかく
accurate, punctuality, exactness, authenticity, veracity
N3 - 確かめるたしかめる
to ascertain
N3 - 明確めいかく
clear up, clarify, define
N2 - 的確てきかく
precise, accurate
N2 - 適確てきかく
precise, accurate
N1 - 確信かくしん
conviction, confidence
N1 - 確定かくてい
definition (math), decision, settlement
N1 - 確保かくほ
guarantee, ensure, maintain, insure, secure