The opposite meaning for the word "benefits" can be detriments, drawbacks, harm or liabilities. Anything that is negative as opposed to positive can be interpreted as an opposite to benefits.
Debtor
Preserving the old farm for conservation purposes and light recreation benefitted the whole community.
Sez who?
Yes it exist among studies in the classroom because the teacher benefitted from the students and the students benefitted from the teacher...
Theodore Roosevelt benifited the Panama Canal.
read a social studies book
the developers themselves
benefitted the Canadian economy
How is India being benefitted by implementing Panchayati system in India?
All parts of Canada benefitted from Confederation.
Benefited or benefitted are equally correct, though benefitted is more commonly used in UK English.(Spell-checkers, especially in the US, will accept only benefited.)
love and prostitues