We found 22 dictionaries that define the word frightening:

General (19 matching dictionaries)

1. frightening: Merriam-Webster
2. frightening: Oxford Learner's Dictionaries
3. frightening: Collins English Dictionary
4. frightening: Vocabulary.com
5. Frightening, frightening: Wordnik
6. frightening: Cambridge Advanced Learner's Dictionary
7. frightening: Wiktionary
8. Frightening, frightening: Dictionary.com
9. frightening: Cambridge Essential American English Dictionary
10. The Frightening: Wikipedia, the Free Encyclopedia
11. Frightening: Online Plain Text English Dictionary
12. frightening: Rhymezone
13. frightening: AllWords.com Multi-Lingual Dictionary
14. frightening: FreeDictionary.org
15. frightening: Mnemonic Dictionary
16. frightening: TheFreeDictionary.com
17. frightening: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

18. frightening: Legal dictionary

Computing (1 matching dictionary)

19. frightening: Encyclopedia

Miscellaneous (1 matching dictionary)

20. frightening: Idioms

(Note: See frighten as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Causing fear; of capable of causing fear; scary. ▸ adjective:  (figuratively) Awful, terrible, very bad. Similar: alarming, dreaded, horrific, fearsome, dreadful, terrible, fearful, direful, horrendous, awful, more... Opposite: calming, soothing, reassuring, comforting, peaceful Phrases: frightening the life out, frightening off, The Wonderful and Frightening World Of..., frightening rhyme, not frightening, more... Colors:     black,     blood red,     midnight blue,     dark purple,     deep green, more... ▸ Words similar to frightening ▸ Usage examples for frightening ▸ Idioms related to frightening ▸ Wikipedia articles (New!) ▸ Popular nouns described by frightening ▸ Words that often appear near frightening ▸ Rhymes of frightening ▸ Invented words related to frightening