不可欠
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Base na-adjective form. Describes something that is absolutely necessary and cannot be omitted. Often used with 『な』 (na) to modify nouns.
Theme
During a coffee break, User and their friend Yamada talk about essential items for daily life and travel.
不可欠
ふかけつ
indispensable / essential
Advanced ExpansionAbstract Concepts
Memory Hook
Think of 'fukaketsu' (不可欠, fukaketsu) as 'full of cake'—something so essential you can't have a party without it! 'Full of cake' → indispensable!
Cultural Note
『不可欠』 (fukaketsu, 'indispensable') is often used in formal or business contexts to describe crucial elements, such as skills or resources. It emphasizes necessity in Japanese culture, where reliability and completeness are highly valued.
Forms
Base: 不可欠Base na-adjective form. Describes something that is absolutely necessary and cannot be omitted. Often used with 『な』 (na) to modify nouns.
Negative: 不可欠ではないAdd 『ではない』 (de wa nai, 'is not') after the base form → 『不可欠ではない』 (fukaketsu de wa nai).
Past: 不可欠だったAdd 『だった』 (datta, past copula) after the base form → 『不可欠だった』 (fukaketsu datta).
Adverbial: 不可欠にAdd 『に』 (ni, adverbial marker) after the base form → 『不可欠に』 (fukaketsu ni). Used to modify verbs or adjectives.
Comparative: より不可欠Comparative formed with modifier 『より』 (yori, 'more than') + base adjective → 『より不可欠』 (yori fukaketsu).
Superlative: 一番不可欠Superlative formed with 『一番』 (ichiban, 'number one / Most') + base adjective → 『一番不可欠』 (ichiban fukaketsu).