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"No puedo" is a phrase which is often translated as "I can't", and "oscuro" is an adjective which is often translated as "dark". Learn more about the difference between "no puedo" and "oscuro" below.
no puedo(
noh
pweh
-
doh
)A phrase is a group of words commonly used together (e.g., once upon a time).
oscuro(
ohs
-
koo
-
roh
)An adjective is a word that describes a noun (e.g., the big dog).
2. (complexion)
a. dark
Ese tinte oscuro de pelo no le sienta bien a su piel clara.That dark hair color doesn't suit her fair skin.
3. (suspicious)
a. shady
Esa corporación está metida en oscuras negociaciones para controlar los precios.That corporation is engaged in shady business to control prices.
4. (sinister)