supplementary

/sˌʌpləmˈɛntɚi/ · 5 syllables

Meaning

adjective

1. functioning in a supporting capacity
   “the main library and its auxiliary branches”
2. added to complete or make up a deficiency
   “produced supplementary volumes”

Synonyms for supplementary

• auxiliary
• subsidiary
• supplemental
• secondary
• additive

Words that rhyme with supplementary

• documentary
• parliamentary
• rudimentary
• complimentary
• sedimentary
• alimentary
• testamentary