Adding – mente
to the feminine form of an adjective creates a pretty long word. This creates a rather cumbersome sentence when several adverbs ending in – mente
are used in the same sentence, so the Spanish language has a rule to shorten adverbs when more than one is used. When two or more adverbs end in – mente,
the suffix – mente
is used only with the last adverb, all preceding adverbs lose the – mente
and keep the singular feminine form of the adjective.