"foolhardy in" is a grammatically correct phrase and is commonly used in written English.
It is often used to describe someone's action or decision as reckless or overly daring. Example: Sarah's plan to climb the mountain alone was foolhardy in the face of the approaching storm.
Now their return seems almost foolhardy in the absence of the assistance they were hoping for.
Such a sum might seem foolhardy in a recession, particularly when several snowboarding competitions have been canceled this season.
The board certainly looks foolhardy in trusting Mr. Corzine to take the risks that he did, but proving that they acted in bad faith would be quite difficult.
Campaigning to push power to Brussels, so that decision-making becomes even more remote from ordinary voters, seems foolhardy in the current anti-political climate.
For all its clarity, novelty and wit, there was perhaps something foolhardy in Podemos's decision to model its last election manifesto on the Ikea catalogue.
Although clearly not at her best – her movement is sluggish and her shots lack their usual fluidity – it would be foolhardy in the extreme to write her off.
This was the bed he died in as well, in another home he had built in Redding, Conn., when he had recovered from the bankruptcy of 1894, brought on by his loss of perhaps $170,000 in a foolhardy investment in the Paige typesetting machine (one of which is on display in the recently built museum annex to the Hartford home).
Earnings dropped steadily from nearly $2 a share in 1987 to less than 50 cents a share in 1993, when a foolhardy promotion in Europe offering appliance buyers free transatlantic flights ballooned costs without doing much for sales.
To be irrational with your own money may be to be foolhardy, to give in to guilty pleasure, or to wallow in caprice.
The 60's are often portrayed as a period of foolhardy idealism in which pot-smoking young people in tie-dyed T-shirts raised a lot of ruckus but accomplished nothing.
What some called foolhardy bets in 2010 now seem like bargains.
