Conjugating い-Adjectives to Past Tense

    • Adjective
    • Conjugation Form
    When an い-adjective ends in 〜かった, we know it is in the past tense. い-adjective かった can take です to show politeness, but be careful not to use the past tense marker でした!

    What Is the Past Tense Form of い-Adjectives?

    When い-adjectives are in the past tense, they end in 〜かった. While in English, tense must be indicated by a verb (as in was fun), い-adjectives conjugate to take the suffix 〜かった to accomplish the same thing. Let's see how this works:

    楽し + かった = 楽しかった

    As you can see, this conjugation is quite simple. Remove the present tense ending 〜い on the end of the word (楽し → 楽し), and then add 〜かった (楽し → 楽しかった). We also wrote about using past tense い-adjectives here.

    Other Forms of い-Adjectives

    Check out the chart below to see how 〜かった fits into the い-adjective paradigm. Click on other conjugations or forms to learn more about them!

    Form 日本語 English
    Stem Form
    く Form strongly
    て Form くて strong, (and)
    Present Tense Form is-strong
    Past Tense Form かった was-strong
    Negative Form くない is-not-strong
    Past Negative Form くなかった was-not-strong
    Conditional Form ければ if strong...
    Measurable Noun Form strength
    Subjective Noun Form strong point