isotonic

2 syllables

• sonic
• tonic
• chronic
• conic
• phonic
• blahnik
• connick
• kronick
• tronic
• vanik

3 syllables

• ironic
• demonic
• platonic
• masonic
• harmonic
• mnemonic
• mnemonic(2)
• laconic
• sardonic
• symphonic
• iconic
• tectonic
• bubonic
• ionic
• fibronic
• flextronic
• gnomonic
• hedonic
• leptonic
• medtronic
• miltonic
• ovonic
• personic
• photronic
• planktonic
• plantronic
• plutonic
• pneumonic
• synchronic
• tranzonic

4 syllables

• electronic
• supersonic
• philharmonic
• catatonic
• ultrasonic
• embryonic
• hydroponic
• histrionic
• monophonic
• polyphonic
• telephonic
• allophonic
• avionic
• diasonic
• diatonic
• ganglionic
• hegemonic
• hypersonic
• hypertonic
• lasersonic
• nucleonic
• panasonic
• pharaonic
• propionic
• respironic
• telectronic
• varitronic

5 syllables

• napoleonic
• audiotronic
• hyaluronic
• neoplatonic

6 syllables

• isoelectronic
• isoelectronic(2)
• microelectronic