Critical Condition
Critical Illness, On The Verge Of Death
noun, の adjective
If someone is so dangerous that they deliberately hurt you, you're going to end up in critical condition. This wasn't an accident, they knew what they were doing and they didn't miss. Now you're on the verge of death. Hold on, kiddo.
きとく
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
父が危篤だという電話がありました。
There was a call saying dad was in critical condition.