Word Usage

Mary W. Ng

June 26, 2009

complementary, complimentary

The adjective complementary means “completing something else”. The adjective complimentary means “admiring or free”.

Incorrect:We have received many complementary comments from our clients.
Correct:We have received many complimentary comments from our clients.
Incorrect:Complementary tickets are available to staff who wish to attend.
Correct:Complimentary tickets are available to staff who wish to attend.
Incorrect:There are two complimentary forces in nature.
Correct:There are two complementary forces in nature.