誓う
ちかう · chikau · JLPT N2 · verb-godan
to swear
📜 誓 = 言 speech + 折 snap: a spoken vow, once sealed by snapping a token
Sound hook: chikau sounds like chic cow, a stylish cow making a solemn promise. The 言 radical marks it as something spoken, so a vow is words you commit to.