Infinitive: to fool
Participle: fooled
Gerund: fooling
| I | fool |
| you | fool |
| he;she;it | fools |
| we | fool |
| you | fool |
| they | fool |
| I | have fooled |
| you | have fooled |
| he;she;it | has fooled |
| we | have fooled |
| you | have fooled |
| they | have fooled |
| I | fooled |
| you | fooled |
| he;she;it | fooled |
| we | fooled |
| you | fooled |
| they | fooled |
| I | had fooled |
| you | had fooled |
| he;she;it | had fooled |
| we | had fooled |
| you | had fooled |
| they | had fooled |
| I | will fool |
| you | will fool |
| he;she;it | will fool |
| we | will fool |
| you | will fool |
| they | will fool |
| I | will have fooled |
| you | will have fooled |
| he;she;it | will have fooled |
| we | will have fooled |
| you | will have fooled |
| they | will have fooled |
| I | fool |
| you | fool |
| he;she;it | fool |
| we | fool |
| you | fool |
| they | fool |
| I | have fooled |
| you | have fooled |
| he;she;it | have fooled |
| we | have fooled |
| you | have fooled |
| they | have fooled |
| I | fooled |
| you | fooled |
| he;she;it | fooled |
| we | fooled |
| you | fooled |
| they | fooled |
| I | had fooled |
| you | had fooled |
| he;she;it | had fooled |
| we | had fooled |
| you | had fooled |
| they | had fooled |
| I | would fool |
| you | would fool |
| he;she;it | would fool |
| we | would fool |
| you | would fool |
| they | would fool |
| I | would have fooled |
| you | would have fooled |
| he;she;it | would have fooled |
| we | would have fooled |
| you | would have fooled |
| they | would have fooled |
| you | fool |
| we | Let's fool |
| you | fool |
| I | am fooling |
| you | are fooling |
| he;she;it | is fooling |
| we | are fooling |
| you | are fooling |
| they | are fooling |
| I | have been fooling |
| you | have been fooling |
| he;she;it | has been fooling |
| we | have been fooling |
| you | have been fooling |
| they | have been fooling |
| I | was fooling |
| you | were fooling |
| he;she;it | was fooling |
| we | were fooling |
| you | were fooling |
| they | were fooling |
| I | had been fooling |
| you | had been fooling |
| he;she;it | had been fooling |
| we | had been fooling |
| you | had been fooling |
| they | had been fooling |
| I | will be fooling |
| you | will be fooling |
| he;she;it | will be fooling |
| we | will be fooling |
| you | will be fooling |
| they | will be fooling |
| I | will have been fooling |
| you | will have been fooling |
| he;she;it | will have been fooling |
| we | will have been fooling |
| you | will have been fooling |
| they | will have been fooling |
| I | would be fooling |
| you | would be fooling |
| he;she;it | would be fooling |
| we | would be fooling |
| you | would be fooling |
| they | would be fooling |
| I | would have been fooling |
| you | would have been fooling |
| he;she;it | would have been fooling |
| we | would have been fooling |
| you | would have been fooling |
| they | would have been fooling |
"The word has in mod.Eng. a much stronger sense than it had at an earlier period; it has now an implication of insulting contempt which does not in the same degree belong to any of its synonyms, or to the derivative foolish." [OED]Meaning "jester, court clown" first attested 1370, though it is not always possible to tell whether the reference is to a professional entertainer or an amusing lunatic on the payroll. As the name of a kind of custard dish, it is attested from 1598 (the food was also called trifle, which may be the source of the name). The verb meaning "to make a fool of" is recorded from 1596. Feast of Fools (c.1320), from M.L. festum stultorum) refers to the bulesque festival celebrated in some churches on New Year's Day in medieval times. Fool's gold "iron pyrite" is from 1882. Fool's paradise "state of illusory happiness" is from 1462. Fool around is 1875 in the sense of "pass time idly," 1970s in sense of "have sexual adventures." Foolosopher, a most useful insult, turns up in a 1549 translation of Erasmus.