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complementary

complementary /ˌkɑːmpləˈmɛntəri/ adjective
complementary
/ˌkɑːmpləˈmɛntəri/
adjective
Britannica Dictionary definition of COMPLEMENTARY
[more complementary; most complementary]
: completing something else or making it better : serving as a complement
used of two things when each adds something to the other or helps to make the other better
: going together well : working well together
: not traditional : alternative
◊ Do not confuse complementary with complimentary.