IPA: /ˈloʊnli/
KK: /ˈloʊnli/
Feeling sad because you are alone or isolated from others.
After moving to a new city, she often felt lonely in her apartment.
Comparative: lonelier
Superlative: loneliest
Lonely is derived from the word 'alone' (from Old English 'ālan', meaning to be alone) combined with the suffix '-ly' (meaning in a manner of). The word 'lonely' describes the state of being in a manner of being alone, often with a connotation of sadness or isolation.
Think of being 'alone' and how 'lonely' describes the feeling of being alone in a sad or isolated way.