Something that completes or goes well with something.

A quantity of something that completes a whole.

पूर्ण संख्या

English Usage: A full complement of staff was present at the meeting.

Hindi Usage: बैठक में कर्मचारियों की पूरी संख्या मौजूद थी।

Serving to complete something.

Providing mutual benefit.

आपसी लाभ

English Usage: The complementary services offered by the two companies increased their overall productivity.

Hindi Usage: दोनों कंपनियों द्वारा दी गई पूरक सेवाओं ने उनकी समग्र उत्पादकता बढ़ा दी।