Accurate
Precise, Exact
noun, な adjective
It is correct and you're certain of it. When you've done this much checking and you're this sure, your measurements must be very accurate and precise.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
コウイチはワニカニの正確なユーザー数を知りません。
Koichi doesn't know the accurate number of WaniKani users.
マイケルはコウイチのランチリクエストを正確に記おくし、注文するというにんむを終えました。
Michael completed his mission to memorize Koichi's lunch request perfectly and order it.
君って、ああ言えばこう言うし、しかも言うことがどれもいちいち正確なのが結構頭にくるんだけど。
Actually, I’m pretty annoyed at how you have a comeback for everything and how what you say is so accurate.