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"Mis" is a form of "mi", an adjective which is often translated as "my". "Mas" is a form of "mas", a conjunction which is often translated as "but". Learn more about the difference between "mis" and "mas" below.
mi(
mee
)An adjective is a word that describes a noun (e.g., the big dog).
1. (possessive)
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
mas(
mahs
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
1. (literary) (contrasting)
A word or phrase restricted in usage to literature or established writing (e.g., sex, once upon a time).
a. but
Soy un caballero valiente, mas no soy agresivo.I am a valiant knight, but I am not aggressive.