Pioneering rhymes with:
auctioneering, bioengineering, domineering, electioneering, engineering, imagineering, oceaneering, reengineering, auctioneering, bioengineering, domineering, electioneering, engineering, imagineering, nearing, oceaneering, reengineering, sneering
Pioneering sounds like:
panoramic, pomerance, pomeranz, pomrenze