Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: the quality or state of being assiduous : diligence
: persistent personal attention
—usually used in plural
Keep scrolling for more
assiduousness, diligence, industriousness, industry, sedulousness
1596, in the meaning defined at sense 1
Resources for assiduity
(as) sick as a dog
Time Traveler for assiduity
See more words from the same year
More from Merriam-Webster on assiduity
See words that rhyme with assiduity
Thesaurus: All synonyms and antonyms for assiduity
Comments on assiduity
What made you want to look up assiduity? Please tell us where you read or heard it (including the quote, if possible).
by word of mouth
Get Word of the Day daily email!
Name that Food Quiz
Can you spell these 10 commonly misspelled words?
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Words from the week of 9/14/2018
For frog-tossing, sword dancing, & more
That dessert might kill you
How a folk song became a term of derision.
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
Test your knowledge of food and food words.
A quiz in common time.
SCRABBLE® fans, sharpen your skills!