7
paper(noun, adjective, thin, board, flimsy)
4
composition board(noun, expression, idiom)
3
ticket(noun, check, pass, program, card)
3
unlifelike
3
identification card(expression, check, pass, program, card)
3
ream
2
card(noun, check, pass, program)
2
board
2
carton
2
page
2
paperboard
2
little
2
manila(noun, paper)
2
newsprint(noun, paper)
2
onionskin(noun, paper)
2
paper board(expression, idiom)
2
papier-mache(noun, paper)
2
parchment(noun, paper)
2
ponderous(adjective, tedious, dreary)
2
sheet(check, pass, program)
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APASmart Define. (2015). cardboard thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/cardboard/thesaurus/synonyms
ChicagoSmart Define. 2015. "cardboard thesaurus" https://smartdefine.org/cardboard/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, cardboard thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/cardboard/thesaurus/synonyms>.
MLASmart Define. "cardboard thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/cardboard/thesaurus/synonyms>