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"Sólo" is a form of "sólo", an adverb which is often translated as "only". "Tan solo" is a phrase which is often translated as "so lonely". Learn more about the difference between "sólo" and "tan solo" below.
sólo()
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
tan solo()
A phrase is a group of words commonly used together (e.g., once upon a time).
a. so lonely
Me sentía tan solo y tan desgraciado que ya no quería vivir.I felt so lonely and miserable I didn't want to live anymore.
