COLLOCATIONS
stiff competition, stiff drink, stiff neck, stiff penalty
WORD FORMSComparative: stiffer | Superlative: stiffest | Past: stiffed | Gerund: stiffingUSAGE NOTES
When used as an adjective, it describes physical properties or abstract concepts like competition. As a slang noun, it is often used in American English to refer to a corpse.