2 syllables:
clinic's, clinics, cynics, glinux, gynex, gynics, kinnock's, linex, linux, lynix, minex, minix, minnix, ninox, pinnix, rtlinux, vinick's, vinik's, vinnick's, zynex

3 syllables:
4mlinux, arch linux, macminix, mklinux, syslinux

4 syllables:
almalinux, gobolinux, kali linux, nanolinux, playonlinux, polyclinics, sparkylinux, util-linux, vectorlinux

5 syllables:
fondaparinux, vmlinux

6 syllables:
video4linux

8 syllables:
windows subsystem for linux

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

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

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

6 syllables:
magnetic resonance, indirect evidence, dicotyledonous

7 syllables:
circumstantial evidence

8 syllables:
artificial intelligence