Look up this word
lonely

In a sentence
Tom je osamelý.
Tom's lonely.
Dievča je osamelé.
The girl is lonely.
Tom a Mária sú obaja osamelí.
Tom and Mary are both lonely.
Keď si sám vo svojom byte, cítiš sa nezávislý. Keď si sám vo svojej izbe, cítiš sa voľný. Keď si sám vo svojej posteli, cítiš sa osamelý.
When you're alone in your apartment, you feel independent. When you're alone in your room, you feel free. When you're alone in your bed, you feel lonely.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.