- a thin stiff board made from paper pulp and used esp for making cartons
- (as modifier): cardboard boxes
- (prenominal) without substance
WordReference Random House Learner's Dictionary of American English © 2026
card•board /ˈkɑrdˌbɔrd/USA pronunciation
n. [uncountable]
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- thin, stiff pasteboard, used for boxes, etc.
adj.
- resembling cardboard, esp. in thinness or cheapness: an apartment with cardboard walls.
- not fully lifelike: a movie with a cardboard hero.
card•board
(kärd′bôrd′, -bōrd′),USA pronunciation n.
adj.
- a thin, stiff pasteboard, used for signs, boxes, etc.
adj.
- resembling cardboard, esp. in flimsiness:an apartment with cardboard walls.
- not fully lifelike;
shallow;
two-dimensional:a play with cardboard characters.
- card1 + board 1840–50
Collins Concise English Dictionary © HarperCollins Publishers::
cardboard /ˈkɑːdˌbɔːd/ n
'cardboard' also found in these entries (note: many are not synonyms or translations):
blister pack
- board
- box
- Boyd
- Bristol board
- card
- cardboard city
- carton
- cask
- chateau cardboard
- cracker
- emery board
- firecracker
- flong
- hardback
- jigsaw puzzle
- mat
- match
- packet
- pottle
- sleeve
- slide
- spillikin
- stencil
- ticket
- toilet paper
- tub
- back
- ballot
- battledore
- blister
- boxboard
- box lunch
- bulk
- car card
- carton-pierre
- chipboard
- colorslide
- containerboard
- crimp
- cutout
- divider
- duplex
- enamel
- file folder
- flip chart
- folder
- index
- jacket
- jute board