darenoun
Her teenage daughter got her to write the book as a dare.
He jumped in the river at twelve o'clock last night as a dare.
For a dare, she slept in a room that is said to be haunted by the ghost of Lord Nelson.

SMART Vocabulary: related words and phrases

Competing and contending (non-sporting)
be one up on someoneidiom
cat
catchup
challenge someone to something/do something
chancer
dare
give someone/something a run for their moneyidiom
go in for something
go toe to toeidiom
hyper-competitive
in competition with someone/something
jungle
pit
sharp elbowsidiom
sharp-elbowed
sharpen (something) up
sharpen your elbowsidiom
showing
snap
toe