suru verb (special), transitive verb, intransitive verb
return to original state; revert; restore
Used for returning to a previous condition, either intransitively (reverting) or transitively (restoring). Often appears in formal or written contexts.
町は戦後、元の姿に復した。
After the war, the town returned to its original appearance.
彼は健康を復
He underwent treatment to restore his health.
suru verb (special), transitive verb
take revenge on
Literary or formal expression for exacting revenge. Commonly used in the pattern 〜に復する.
彼は敵に復する機会をうかがっていた。
He was waiting for a chance to take revenge on his enemy.