English past tense verbs have so many forms like swam, ate, read, let, brought, etc. compared to Japanese, where all past tenses end with -mashita, -mashita, -mashita, with virtually no exception.

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It first entered the Collins English dictionary in 2005 with the definition "the tense final stages of a league competition, especially from the point of view of the leaders".

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The final version of Ithkuil, which Quijada published in 2011, has twenty-two grammatical categories for verbs, compared with the six tense, aspect, person, number, mood, and voice that exist in English.

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