Insider's rhymes with:
insiders, insiders, insiders, outsider's, outsiders, outsiders', seiders, siders, siders', syders, syders'
Insider's sounds like:
injectors, inquisitors, insiders, insiders'
insiders, insiders, insiders, outsider's, outsiders, outsiders', seiders, siders, siders', syders, syders'
injectors, inquisitors, insiders, insiders'