出合う (であう)to meet (by chance); to come across; to run across

to meet (by chance); to come across; to run acrossGodan verb with 'u' ending, intransitive verb
to meet (e.g. of rivers, highways, etc.)Godan verb with 'u' ending, intransitive verb
to emerge and engage (an enemy)Godan verb with 'u' ending, intransitive verb

出合う, its kanji, and other words that share them.Open this graph

Kanji in 出合う

出身しゅっしんperson's origin (e.g. city, country, parentage, school)
輸出ゆしゅつexport; exportation
出場しゅつじょう(stage) appearance; performance
進出しんしゅつadvance (into a new market or stage of progress); launching (a new career or venture)
出すだすto take out; to get out
出席しゅっせきattendance; presence
出演しゅつえんperformance; appearance (in a stage, film, TV show, etc.)
出版しゅっぱんpublication
合意ごうい(coming to an) agreement; consent
問い合わせといあわせenquiry; inquiry
総合そうごうsynthesis; coordination
試合しあいmatch; game
連合れんごうunion; alliance
会合かいごうmeeting; assembly
組合くみあいassociation; union
統合とうごうintegration; unification

See how 出合う connects to the rest of Japanese.