- n1. addition, enlargement, supplementation, extension, annexation, Rare. annexment, annex, wing; appendage, appurtenance, appurtenant, adjunct, ancilla, appanage, attachment; complement, completer, accessory, accompaniment, concomitant, concurrent, attendant, counterpart, corollary, correlative, Astron. comes; additive, reinforcement, fortification, fortifier, strengthener; support, buttress, prop; accession, increase, raise, increment, gain, augmentation, bonus.2. appendix, addendum, codicil, rider, Law. allonge; epilogue, postscript, p.s., P.S., subjoinder, subjunction, suffix, postfix, endpiece, tailpiece, tag; updating, yearbook; amendment, modification, change, correction.3.(all of newspapers) extra, special or added feature, magazine section, special section, advertising supplement; comic section, funny papers, funnies, comics, comic strips; insert; follow-up, follow, sidebar, shirttail.v4. complement, complete, accompany, top off; augment, enlarge, extend, add on or to, increase; reinforce, strengthen, fortify, support, subsidize.5. compensate for, make up for, fill a gap or need; upgrade, bring up to par or standard, boost, lift, raise.
A Note on the Style of the synonym finder. 2014.