We found 31 dictionaries that define the word lonely:

General (26 matching dictionaries)

1. lonely: Longman Dictionary of Contemporary English
2. lonely: Merriam-Webster
3. lonely: Oxford Learner's Dictionaries
4. lonely: American Heritage Dictionary of the English Language
5. lonely: Collins English Dictionary
6. lonely: Vocabulary.com
7. Lonely, lonely: Wordnik
8. lonely: Cambridge Advanced Learner's Dictionary
9. lonely: Wiktionary
10. lonely: Webster's New World College Dictionary, 4th Ed.
11. lonely: The Wordsmyth English Dictionary-Thesaurus
12. lonely: Infoplease Dictionary
13. Lonely, lonely: Dictionary.com
14. lonely: Cambridge Essential American English Dictionary
15. Lonely (Akon song), Lonely (Casey Donovan song), Lonely (Diplo song), Lonely (Frente! EP), Lonely (Joel Corry song), Lonely (Nana song), Lonely (Peter Andre song), Lonely (Shannon Noll song), Lonely (Sharon Sheeley song), Lonely (Sistar song), Lonely (Spica EP), Lonely (Tracy Lawrence song), Lonely (fashion label), Lonely (song), Lonely, The Lonely (Christina Perri song), The Lonely (The Twilight Zone), The Lonely: Wikipedia, the Free Encyclopedia
16. Lonely: Online Plain Text English Dictionary
17. lonely: Webster's Revised Unabridged, 1913 Edition
18. lonely: Rhymezone
19. lonely: AllWords.com Multi-Lingual Dictionary
20. lonely: Webster's 1828 Dictionary
21. lonely: FreeDictionary.org
22. lonely: Mnemonic Dictionary
23. lonely: TheFreeDictionary.com
24. lonely: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

25. lonely: Legal dictionary

Computing (1 matching dictionary)

26. lonely: Encyclopedia

Medicine (1 matching dictionary)

27. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)

28. lonely: Idioms

Slang (1 matching dictionary)

29. lonely: Green’s Dictionary of Slang

(Note: See lonelier as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Unhappy due to feeling isolated from contact with other people. ▸ adjective:  (of a place or time) Unfrequented by people; desolate. ▸ adjective:  (of a person) Without companions; solitary. Similar: alone, lone, unaccompanied, lonesome, solitary, inaccessible, unsocial, unaccessible, unfrequented, dejected, more... Opposite: social, connected, accompanied, crowded, engaged Types: alone, lonesome, solitary, desolate, deserted, abandoned, more... Phrases: lonely hearts, lonely heart, plough a lonely furrow, plow a lonely furrow, I Wandered Lonely as a Cloud, more... Adjectives: strong, not, dim, shore, seven, last Colors:     gray,     blue,     charcoal,     indigo,     midnight blue, more... ▸ Words similar to lonely ▸ Usage examples for lonely ▸ Idioms related to lonely ▸ Wikipedia articles (New!) ▸ Popular nouns described by lonely ▸ Words that often appear near lonely ▸ Rhymes of lonely ▸ Invented words related to lonely