臆

Kanji: 臆
Level: N1
Meaning: breast, chest, courage, gut feeling
On'yomi: オク
Kun'yomi: おく.する
Strokes: 17
Common compounds: 臆病 (おくびょう) timid 臆する (おくする) to be timid 臆断 (おくダン) conjecture
Memory hook: A person (亻) is in a building (穴) and feels something in their gut (意).