What's A Sentence Used For The Word Imprudent?

Good examples of this would be: 
 "Sally imprudently invested all her money in worthless stocks."
"The man imprudently asked his overweight, non-pregnant co-worker when her baby was due."
"Before he could think it over, Leo was imprudent in his hasty decision to marry an arrogant lady."
 
Hope that helped!
Moe
 

Sometimes I am imprudent with my friends

She swallowed all the chilly fries, it's imprudent !

You could say "I think it would be imprudent to withdraw any more money at this stage - you may need your savings later."

Or "Although brave, his action was also imprudent and put several lives at risk."

It seems to me that you already used the word in your question.
Your question was a sentence was it not ?
It would not be imprudent to use the word imprudent in a sentence. Maybe I'm being imprudent. 

A definition for imprudent

Imprudent is an adjective its contrary is prudent. I'm imprudent when I'm in a hurry, so everything isn't done properly.