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, hypostasis, hypostasise, katabasis, leukostasis, lymphostasis, metabasis, metaplasis, myotasis, neurectasis, parabasis, periphrasis, peristasis, sarcobasis, thromboclasis, typhlectasis, venostasis

5 syllables:
accrual basis, antanaclasis, 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:
emphasis, nebulous, elements, hephaestus, tetanus, sedulous, petulance, offenseless, fecklessness, membranous, restlessness, excellence, exodus, evidence, pendulous, recklessness, edifice, detritus, blessedness, helplessness, renascence, precedence, helpfulness, pestilence, tremulous, prevalence, eminence, tenebrous, fretfulness, aesculus, pegasus, endlessness, resinous, credulous, resonance, dreadfulness, elephants, eloquence, pleasantness, regulus, daedalus, gentleness, healthfulness, precipice, petalous, specialness, negligence, tendinous, tenuous, emulous, femaleness, genesis, xenopus, venomous, benelux, elegance, relevance, 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:
contentiousness, benevolence, inelegance, antecedence, preeminence, beneficence, unpleasantness, affectedness, apetalous, directionless, edematous, shigellosis, state's evidence, maleficence, pink elephants, persepolis, incredulous, irrelevance, intelligence, malevolence, eleven-plus, necessitous, alliaceous, amentaceous, amylaceous, arboraceous, arenaceous, argillaceous, carbonaceous, coriaceous, disputatious, efficacious, farinaceous, foliaceous, ostentatious, perspicacious, rhadamnathus, saponaceous

5 syllables:
macrocephalous, leptocephalus, conscientiousness, hearsay evidence, hydrocephalus, direct evidence, microcephalous, overemphasis, inefficacious, unostentatious

6 syllables:
magnetic resonance, indirect evidence, dicotyledonous

7 syllables:
circumstantial evidence

8 syllables:
artificial intelligence