suru verb (special), transitive verb
mourn; condole
Formal verb used for expressing condolences, especially in writing or at funerals. Often used with 死, 逝去, or 不幸.
友人の死を弔するために、葬儀に参列した。
I attended the funeral to mourn my friend's death.
弔する言葉が
I cannot find words to express my condolences.