heal, cure, soothe
癒す（いやす）、癒える（いえる）、治癒（ちゆ）
to heal, to be cured, healing
On-reading (ユ) is used in compounds; kun-reading (い(える)) is used standalone or with okurigana. Appears in many compounds — memorize the key ones rather than the kanji in isolation. Has multiple meanings (heal; cure; soothe). Context determines which applies — pay attention in reading passages. This kanji forms verbs/adjectives with okurigana. Practice both the word form and compound forms.
From the JLP Quiz question bank — the word in the form it is actually tested in.
がんは早期発見できれば治癒率が大幅に向上するが、日本の検診受診率は欧米諸国に比べて低い水準にある。
Answer: 症状がないから大丈夫だという考え
