1
to be based (on);to be founded (on);to be grounded (on);to be in accordance (with)
この物語は事実に基づいている。
This story is founded on fact.
2
to be due to;to come (from);to arise (from);to originate (in)
彼らの争いは誤解に基づくものだ。
The dispute between them is due to a misunderstanding.
Other forms
基く 【もとづく】 (irregular okurigana usage) · 基ずく 【もとづく】 (search-only kanji form) · 基付く 【もとづく】 (search-only kanji form)