We found 23 dictionaries that define the word Alertness:

General (19 matching dictionaries)

1. alertness: Merriam-Webster
2. alertness: Oxford Learner's Dictionaries
3. alertness: Collins English Dictionary
4. alertness: Vocabulary.com
5. Alertness, alertness: Wordnik
6. alertness: Cambridge Advanced Learner's Dictionary
7. alertness: Wiktionary
8. Alertness, alertness: Dictionary.com
9. Alertness: Wikipedia, the Free Encyclopedia
10. Alertness: Online Plain Text English Dictionary
11. alertness: Webster's Revised Unabridged, 1913 Edition
12. alertness: Rhymezone
13. Alertness: AllWords.com Multi-Lingual Dictionary
14. alertness: Webster's 1828 Dictionary
15. alertness: FreeDictionary.org
16. alertness: Mnemonic Dictionary
17. alertness: TheFreeDictionary.com

Business (1 matching dictionary)

18. alertness: Legal dictionary

Computing (1 matching dictionary)

19. alertness: Encyclopedia

Medicine (1 matching dictionary)

20. alertness: Medical dictionary

Miscellaneous (1 matching dictionary)

21. alertness: Idioms

(Note: See alert as well.)

Definitions from Wiktionary (alertness) ▸ noun:  The quality of being alert or on the alert. Similar: watchfulness, vigilance, on the qui vive, vigilantness, awakeness, unalertness, wariness, awakedness, awareness, attentivity, more... Opposite: drowsiness, lethargy, sluggishness, stupor Types: watchfulness, vigilance, attentiveness, wakefulness, more... Adjectives: mental, constant, full, intellectual, general, greater, daytime, more, relaxed, physical, visual Colors:     red,     yellow,     orange,     bright green,     neon yellow, more... ▸ Words similar to Alertness ▸ Usage examples for Alertness ▸ Idioms related to Alertness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing Alertness ▸ Words that often appear near Alertness ▸ Rhymes of Alertness ▸ Invented words related to Alertness