2 syllables:
-stasis, basis, casis, chasis, clasis, crasis, glacis, jaysus, lacis, mesas, nacis, rhacis, stasis, tahsis, tasis

3 syllables:
aclasis, airbases, cash basis, diaplasis, diectasis, ecbasis, ecphrasis, ectasis, ekphrasis, horasis, oasis, oasys, renesas, subspaces, systasis

4 syllables:
anabasis, anaclasis, anastasis, antiphrasis, antistasis, biostasis, blennostasis, catabasis, cataclasis, cholestasis, chronostasis, coprostasis, cryostasis, cytoclasis, cytostasis, diaclasis, epistasis, gastrectasis, haemostasis, hemostasis, holophrasis, homostasis, hypostasise, katabasis, leukostasis, lymphostasis, metabasis, metaplasis, myotasis, neurectasis, parabasis, periphrasis, peristasis, sarcobasis, thromboclasis, typhlectasis, venostasis

5 syllables:
accrual basis, antanaclasis, atelectasis, bronchiectasis, enterectasis, homeostasis, karyoclasis, laryngostasis, onychoclasis, osteoclasis, ptyalectasis, pyelectasis, sialectasis

6 syllables:
antiperistasis, arteriectasis, bacteriostasis, blepharochalasis, dermatochalasis, homoeostasis, lymphangiectasis, myodiastasis, telangiectasis

7 syllables:
electrohemostasis, on a regular basis, pyeloureterectasis

8 syllables:
on an irregular basis

9 syllables:
on an individual basis

2 syllables:
aphis, davis, dreyfus, dreyfuss, gracious, spacious

3 syllables:
wantonness, concreteness, profitless, populous, ominous, omnibus, concaveness, obtuseness, opulence, providence, cognizance, spotlessness, prominence, oblateness, prophetess, confidence, consonance, commonness, populace, consequence, somnolence, documents, dominance, consciousness, vomitus, oxalis, bottomless, provenance, populus, polypus, continence, romulus, watchfulness, pompousness, araceous, audacious, bodacious, ceraceous, chartaceous, chylaceous, curvaceous, edacious, fallacious, flirtatious, fugacious, loquacious, mendacious, predaceous, predacious, rosaceous, sagacious, salacious, sebaceous, tenacious, ungracious, veracious, vexatious, vinaceous, vivacious, voracious

4 syllables:
predominance, self-confidence, hydrolysis, hypothesis, endogamous, abdominous, metropolis, sarcophagus, synonymous, incontinence, incompetence, concomitance, monogynous, ignobleness, saprophagous, self-consciousness, recognizance, obsoleteness, monoclinous, necropolis, anonymous, propositus, passionateness, diplodocus, inconsequence, esophagus, reconnaissance, monotonous, convolvulus, monogamous, homologous, oppositeness, autonomous, incompleteness, apophysis, acropolis, nitrogenous, anthophilous, subconsciousness, alliaceous, amentaceous, amylaceous, arboraceous, arenaceous, argillaceous, carbonaceous, coriaceous, disputatious, efficacious, farinaceous, foliaceous, ostentatious, perspicacious, rhadamnathus, saponaceous

5 syllables:
amylolysis, anthropophagus, vote of confidence, electrolysis, entomophilous, opisthognathous, adorableness, megalopolis, hippopotamus, stream of consciousness, variableness, anemophilous, anisogamous, loss of consciousness, peloponnesus, inefficacious, unostentatious

8 syllables:
urinary incontinence, alcoholics anonymous