pay means “to pay” in English. It is irregular: some of its forms don't follow the default pattern.
Updated
The forms of pay
The core forms of pay are: third person pays, present participle paying, past simple paid, past participle paid. Because it is irregular, at least one of these is not what the regular rule would predict.
pay in a sentence
In a sentence, pay looks like this: She pays the rent on the first of the month.. The example shows the context the form turns up in.
Forms and CEFR levels
This page lists 4 forms of pay, grouped by CEFR level. The third person (A1) is free to practise in Verboteca; Premium opens the remaining forms.
FAQ
What does “pay” mean in English?
pay means “to pay”.
Is pay regular or irregular?
pay is an irregular English verb: some of its forms don't follow the regular pattern.