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Grammatical conjugation

Grammatical conjugation is the creation of derived forms of a verb from one basic form. Conjugation may be affected by person, number, gender, tense, mood, voice, or some other language-specific factor or factors. When a verb is used to function as the action done by a subject, the verb must be conjugated in most languages.

For example, here's a sample conjugation of the English verb to be and its Latin and French equivalents, esse and être. Except for the infinitive, which is given in the present form, all the verbs listed are in the present indicative active.

to be / esse / être
Form / Person English Latin French
Infinitive to be esse être
1st singular I am sum je suis
2nd singular you are es tu es
3rd singular he, she, or it is est il/elle est
1st plural we are sumus nous sommes
2nd plural you are estis vous êtes
3rd plural they are sunt ils/elles sont

The grammatical conjugation of an irregular verb forms a model for a genre of joke called the self-serving conjugation. This satirizes the fashion in which violations of the Categorical Imperative may be cloaked in verbal obfuscation. For example: I delegate effectively, you play politics, he is in violation of his service level agreement.