dun
1 of 4adjective
ˈdən 
1
a
: having a slightly brownish dark gray color : having the color dun (see dun entry 2 sense 2)
b
of a horse : having a grayish-yellow coat with black mane and tail
2
: marked by dullness and drabness
dunness
ˈdən-nəs
noun dun
2 of 4noun (1)
1
: a horse with a grayish-yellow coat and a black mane and tail : a dun horse
2
: a variable color averaging a nearly neutral slightly brownish dark gray
3
: a subadult mayfly
also, fishing : an artificial fly tied to imitate such an insect
dun
3 of 4verb
dunned; dunning
transitive verb
1
: to make persistent demands upon for payment
dunning their members for contributions
2
: plague, pester
dunned by troubles literary and monetary 
Irish Digest
Irish Digestdun
4 of 4noun (2)
1
: someone who makes persistent demands upon people for payment : a person who duns (see dun entry 3)
2
: an urgent request
especially : a demand for payment
Synonyms
Noun (2)
- claim
- demand
- importunity
- requisition
- ultimatum
See all Synonyms & Antonyms 
Word History
Etymology
Adjective and Noun (1)
Middle English, from Old English dunn — more at dusk
Verb
origin unknown
Noun (2)
noun derivative of dun entry 3
First Known Use
Adjective
before the 12th century, in the meaning defined at sense 1a
Noun (1)
15th century, in the meaning defined at sense 1
Verb
circa 1648, in the meaning defined at sense 1
Noun (2)
1628, in the meaning defined at sense 1
Kids Definition
dun
noun
ˈdən
: a slightly brownish dark gray
dun 1 of 3
noun
as in wish
something that someone insists upon having it's probably not a good idea to ignore a creditor's dun for repayment Synonyms & Similar Words
Relevance
- wish
- demand
- requirement
- must
- request
- need
- claim
- want
- requisition
- ultimatum
- importunity
- desire
- basic
- stipulation
- essential
- drive
- provision
- imposition
- condition
dun
2 of 3adjective
as in white
Synonyms & Similar Words
- white
- sandy
- chocolate
- whitish
- sepia
- palish
- chalky
- pale
- ashy
- ashen
- hoar
- livid
- mousy
- hoary
- brindled
- mousey
- slaty
- grizzled
- faded
- brindle
- sad
- gray
- grayish
- slatey
- silver
- silvery
- achromatic
- dull
- grey
- slate
- neutral
- pewter
- washed-out
- dirty
- colorless
- leaden
- steely
- argentine
Antonyms & Near Antonyms
- rich
- colored
- deep
- bright
- gay
- chromatic
- variegated
- multicolored
- varicolored
- polychromatic
- colorful
- ablaze
- polychrome
- motley
dun
3 of 3verb
as in to worry
Synonyms & Similar Words
- worry
- vex
- fret
- devil
- trouble
- dog
- annoy
- aggravate
- irk
- bother
- irritate
- rile
- gall
- torment
- put out
- gnaw
- hassle
- grate
- exasperate
- chafe
- roil
- get
- pester
- rankle
- pique
- bedevil
- nettle
- peeve
- persecute
- disturb
- beset
- inconvenience
- rasp
- bug
- distress
- beleaguer
- plague
- besiege
- chivy
- harass
- chivvy
- anger
- provoke
- afflict
- perturb
- madden
- antagonize
- obtrude
- intrude (upon)
- infuriate
- outrage
- inflame
- agitate
- encroach
- trespass
- incense
- butt in
- infringe
- cut in (on)
- enrage
- invade
- enflame
Antonyms & Near Antonyms
- forget
- ignore
- leave
- slight
- disregard
- please
- oblige
- appease
- placate
- satisfy
- disarm
- gratify
- delight
- conciliate
- mollify
- content
- comfort
- console
- gladden
- characteristic curve
- characteristic equation
- characteristic function
- characteristic impedance
- characteristic polynomial
- characteristic radiation
- characteristic root
- characteristic temperature
- characteristic value
- characteristic vector
- characteristic X rays
- characteristically
- characteristicness
- characteristics
- characterizable
- characterization
- characterizations
- characterize
- characterized
- characterizer
- characterizers
- characterizes
- characterizing
- characterless
- Lundy Island