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Beginner's Dictionary
       

stiff

 
 
pronunciation:
stIf
part of speech: adjective
inflections: stiffer, stiffest
definition 1: not easy to bend; hard.
This thick cardboard is very stiff.
synonyms:
firm
antonyms:
flexible
similar words:
hard
definition 2: not able to move freely.
My knees are stiff today.
antonyms:
loose
similar words:
tense
derivations: stiffly (adv.), stiffness (n.)