2 syllables:
aeris, bareass, barris, caerus, ceras, cerris, cerus, cherice, claris, deros, derose, derris, derus, erice, erris, faris, farris, ferris, ferriss, ferrous, ferus, garous, gehris, geras, gerris, glareous, glaris, glarus, haris, harris, harris', heiress, kaross, keras, keris, maris, marous, meris, naris, nerice, neris, paras, paris, paris', parris, peras, peris, perisse, pharus, saras, scare us, scarus, serrous, sherris, spare us, tarus, terrace, terris, varis, varisse, varus, verus, waris, xerus

3 syllables:
abderus, aperus, archeress, assuerus, calveras, coheiress, embarrass, generis, guideress, herb paris, hesperis, hesperus, iberus, jared harris, luvarus, machaerus, non-ferrous, nonferrous, numeris, polaris, polarise, porteress, prepare us, procerus, quakeress, sean harris, shakeress, solaris, solarise, valderas, volaris

4 syllables:
antiaris, arnoseris, audiveris, automeris, basilaris, calvin harris, dana terrace, deinoceras, depolarise, dimachaerus, dinoceras, genus paris, hypochaeris, lethocerus, palaverous, pomaderris, pteroceras, rachael harris, raphicerus, regularise, rivieras, stegoceras, sternotherus

5 syllables:
actinomeris, agriocharis, ahasuerus, ahasverus, cassandra harris, deinocheirus, equinovarus, follicularis, kamala harris, midnight in paris, naomie harris, neil patrick harris, opensolaris, ornithocheirus, plaster of paris, subscapularis, synthetoceras

6 syllables:
catacombs of paris, chamaecyparis, choriocapillaris, costoscapularis, emily in paris, notre-dame de paris

2 syllables:
cirrus, doris, horus, virus, aurous, cyrus, purus, gyrus, peeress, pyrus, torus, morris, laurus, starets, morus, chorus, merits, taurus, porous, sorus, iris

3 syllables:
thesaurus, honduras, slow virus, effloresce, liquorice, desirous, sciurus, high spirits, arcturus, ichorous, belarus

4 syllables:
pythagoras, ardent spirits, retrovirus, brontosaurus, polyporus, myxovirus, herpes virus, stegosaurus, bearded iris, tumor virus, neutral spirits, allosaurus

5 syllables:
tyrannosaurus, apatosaurus, ichthyosaurus, japanese iris, picornavirus, british honduras, ebola virus

6 syllables:
herpes simplex virus

7 syllables:
hepatitis a virus, cytomegalovirus

8 syllables:
tobacco mosaic virus, human papilloma virus

11 syllables:
human immunodeficiency virus