確実
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Base na-adjective form. Describes something that is certain, definite, or assured. Used with 『な』 (na) when modifying nouns, e.g., 『確実な結果』 (kakujitsu na kekka, 'certain result').
Theme
In a study group, User and their friend Aiko are reviewing for an upcoming exam, discussing their confidence in the material.
確実
かくじつ
certainty (state of being sure or definite)
Advanced ExpansionAbstract Concepts
Memory Hook
To remember 『確実』 (kakujitsu, 'certainty'), think of a 'cactus' that's reliable and sturdy — 'cactus' sounds like 'kakujitsu', symbolizing something sure and dependable. 'Cactus' → 確実 (kakujitsu, 'certainty').
Cultural Note
In Japanese business and daily life, 『確実』 (kakujitsu, 'certainty') is valued for reliability and precision. It's often used in contexts like 『確実な計画』 (kakujitsu na keikaku, 'a reliable plan') to emphasize trustworthiness.
Forms
Base: 確実Base na-adjective form. Describes something that is certain, definite, or assured. Used with 『な』 (na) when modifying nouns, e.g., 『確実な結果』 (kakujitsu na kekka, 'certain result').
Negative: 確実ではないAdd 『ではない』 (de wa nai, 'is not') after the base form → 『確実ではない』 (kakujitsu de wa nai, 'not certain').
Past: 確実だったAdd 『だった』 (datta, past copula) after the base form → 『確実だった』 (kakujitsu datta, 'was certain').
Adverbial: 確実にAdd 『に』 (ni, adverbial marker) after the base form → 『確実に』 (kakujitsu ni, 'certainly').
Comparative: より確実Comparative formed with modifier 『より』 (yori, 'more than') + base adjective → 『より確実』 (yori kakujitsu, 'more certain').
Superlative: 一番確実Superlative formed with 『一番』 (ichiban, 'number one / Most') + base adjective → 『一番確実』 (ichiban kakujitsu, 'the most certain').