Horrible vs. terrible vs. affreux

In French, 'horrible', 'terrible', and 'affreux' are adjectives used to describe something that is very unpleasant or shocking. While they are synonymous in many contexts, subtle differences in their connotations and usage can change the nuance of a sentence. Understanding these differences is key to mastering the emotional impact of language in French expression.

Horrible

Horrible refers to something that causes horror, shock or disgust. It is often used to denote a stronger sense of repulsion or an emotionally charged reaction to something exceedingly unpleasant.
Ce film était tellement horrible que je n'ai pas pu dormir de la nuit.
(That movie was so horrible that I couldn't sleep all night.)
L'accident a été horrible, il y avait des débris partout.
(The accident was horrible; there were debris everywhere.)

Terrible

Terrible can describe something extremely bad or serious but can also be used ironically or emphatically to mean remarkably good or intense. In some contexts, it implies a strong degree of severity or intensity rather than just quality.
La tempête d'hier était vraiment terrible, beaucoup d'arbres ont été déracinés.
(Yesterday's storm was really terrible; a lot of trees were uprooted.)
Il a vécu une expérience terrible qui l'a changé à jamais.
(He had a terrible experience that changed him forever.)
C'est un joueur de tennis terrible, ses adversaires ont peur de lui.
(He's a terrific tennis player; his opponents are afraid of him.)

Affreux

Affreux typically denotes something frightful, ugly, or disagreeable in appearance or nature. It implies disgust or aversion and is sometimes less intense than 'horrible'.
Le goût de ce médicament est vraiment affreux.
(The taste of this medicine is really awful.)
Elle portait un chapeau affreux à la fête hier.
(She wore an ugly hat to the party yesterday.)

Summary

While 'horrible', 'terrible', and 'affreux' all describe aspects of negativity ranging from disgust to intensity, each word has its own distinct nuance that can change the perception of what is being described: 'horrible' emphasizes shock or horror, 'terrible' stresses severity or intensity (and can be positive when used ironically), and 'affreux' focuses on the unpleasantness in terms of frightfulness or disagreeability in appearance. Choosing the correct word hinges on the specific feeling one wishes to convey about the subject in question.