How to Say "formality" in Spanish
The Spanish word for “formality” is “ceremonia” — B2 level.
English → SpanishB2
nounB2
excessive politeness or strict etiquette

Examples
Deja tanta ceremonia, somos amigos.
Stop with all the fuss/formality, we are friends.
Entró en la casa sin ninguna ceremonia.
She entered the house without any formality (casually).
Using 'Tanta'
When talking about excessive formality, 'ceremonia' is often paired with 'tanta' (so much) to emphasize that the behavior is annoying or unnecessary: '¡No hagas tanta ceremonia!' (Don't make such a big deal out of it!).
Related Translations
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