Questions & Answers about Ik geloof jou niet.
Why is it jou and not je in this sentence?
Jou is the stressed form of the object pronoun for "you", while je is unstressed. You use jou when you want to strongly emphasize who you do not believe: "I don't believe you (but I might believe someone else)." If you just want to state the fact neutrally, you would say Ik geloof je niet.
Could I say Ik geloof jij niet?
No, because jij is a subject pronoun. It is only used for the person doing the action (like "I" or "he" in English). Since "you" is the one receiving the action here (being believed), you must use the object pronoun jou (or je).
Why does niet go at the very end of the sentence?
In Dutch, when you negate a sentence that has a specific object (like the pronoun jou), the word niet comes after that object. So the word order is literally "I believe you not."
The full verb is geloven (to believe). Why does the "Ik" form have two os and end in an f?
This follows standard Dutch spelling rules. First, a Dutch word almost never ends in v, so it changes to an f. Second, because geloven has a long "o" sound, we must double the o in geloof so it doesn't accidentally turn into a short sound when written with a single vowel in a closed syllable.