掛かかり合あう

か

り

あ

う

Meanings

godan verb (-u), intransitive verb

have something to do with; be concerned with; have a connection with

Neutral expression for being involved or having a relationship with someone or something. Often used with ～と or ～に.

が

いい

。

You'd better not have anything to do with that person.

godan verb (-u), intransitive verb

become involved in (something negative); get entangled in; get mixed up in

Implies unwanted or troublesome involvement, often in a negative situation. Frequently used with ～に.

掛かかり合あう
Standard kanji spelling for this verb.
係かかりあうUsage100%
search-only kanji form
Search-only variant; the okurigana 係りあう is less standard than 係り合う.
係かかり合あう
Alternate kanji spelling; 係 carries a nuance of involvement or relation.
かかり合あう
Mixed kana-kanji spelling, common in everyday writing.

関かかわる
関わる is more common and broader, meaning 'to be related to' or 'to affect'. 掛かり合う emphasizes mutual involvement or entanglement, often with a negative nuance.
巻まき込こまれる
巻き込まれる is passive and means 'to be dragged into' something, often against one's will. 掛かり合う can be active or passive, but still implies getting involved in something troublesome.

Compound of 掛かる (to be involved, to hang) + 合う (mutual action). The combination suggests mutual or reciprocal involvement.