Meanings
According to one source[1], the origin of this phrase is from the cloth industry, where a small flaw in a fabric would be marked by a string so it could easily be spotted. This suggests a meaning of "without flaws".
How to pronounce "no strings attached":
AU
Characterized by an absence of conditions or obligations.
Without conditions or obligations; without a catch.
Example: "For a friend, I'll help out for free, no strings attached."
Example Sentences
1
He offered to lend me his car with no strings attached.
2
She accepted the job offer with no strings attached.
3
They donated a large sum of money with no strings attached.
4
I received a free sample of the product with no strings attached.
5
He gave me the tickets to the concert with no strings attached.