How to Say "i detest" in Spanish
The Spanish word for “i detest” is “detesto” — B1 level. This is a very common word in everyday Spanish.

Examples
Detesto levantarme temprano los fines de semana.
I hate getting up early on weekends.
Si detesto el ajo, ¿por qué lo pones en todo?
If I detest garlic, why do you put it in everything?
Detesto la injusticia, es algo que no tolero.
I detest injustice; it's something I can't tolerate.
Using the 'I' Form
'Detesto' is the present tense form used only when the action is done by 'yo' (I). It means 'I detest' right now or generally.
Following with Nouns
When you detest a general thing (like 'noise' or 'broccoli'), you usually need to use the definite article (el, la, los, las) right after the verb: 'Detesto el frío' (I hate the cold).
Confusing Intensity
Mistake: “I detesto el café.”
Correction: Detesto el café. ('Detestar' is often slightly stronger or more formal than 'odiar' (to hate), though they are usually interchangeable.)
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