eaten
v.v. the past participle of 'eat'. You use it when you have finished a meal or consumed food.
v. the past participle of the irregular verb 'eat'. Used in the formation of perfect tenses and the passive voice.
I have already eaten my lunch.
By the time the guests arrived, the children had already eaten all the snacks on the table.
The crops were eaten by locusts during the drought, leaving the local farmers with almost nothing to harvest for the winter market.
From Middle English eten, from Old English eten, from Proto-West Germanic etan, from Proto-Germanic etanaz; morphologically eat + -en.
As a past participle, it requires an auxiliary verb like 'have' or 'be' to function in a sentence.
I have ate alreadyI have eaten alreadyLearners often confuse the simple past 'ate' with the past participle 'eaten' when using the present perfect tense.