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"Barely" is an adverb which is often translated as "apenas", and "seldom" is an adverb which is often translated as "rara vez". Learn more about the difference between "barely" and "seldom" below.
barely()
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (hardly)
a. apenas
The kitten could barely reach the dangling toy.El gatito apenas podía alcanzar el juguete que colgaba.
2. (scantily)
a. escasamente
My bedroom is barely furnished because I am a minimalist.Mi habitación está escasamente amueblada porque soy minimalista.
seldom()
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
1. (rarely)
b. casi nunca
Although I live close to the beach, I seldom go swimming.Aunque vivo cerca de la playa, casi nunca salgo a nadar.
c. pocas veces
Very seldom have I seen gardens as beautiful as this one.Muy pocas veces he visto jardines tan hermosos como este.