2 syllables:
birring, blurring, burring, cering, chirring, churring, during, firring, flouring, furring, hering, heuring, kering, purring, schering, scheuring, schuring, shirring, slurring, spurring, stirring, suring, tering, vering, were hung, whirring

3 syllables:
averring, bestirring, chauffeuring, concurring, conferring, cooccurring, deblurring, deferring, demurring, deterring, honouring, incurring, inferring, interring, occuring, occurring, preferring, recurring, refering, referring, soul-stirring, transfering, transferring

4 syllables:
discolouring, dishonouring, inconcurring, non-recurring, nonrecurring, randonneuring, reoccurring

2 syllables:
airing, baring, barring, bearing, blaring, boring, caring, cheering, clearing, curing, daring, earring, erring, fearing, firing, flaring, flooring, gearing, glaring, hearing, herring, hiring, jarring, jeering, meringue, mooring, nearing, pairing, paring, pouring, raring, rearing, roaring, scaring, scoring, sharing, shearing, shoring, sneering, snoring, soaring, sparing, sparring, staring, starring, steering, storing, swearing, tearing, tiring, touring, towering, veering, warring, wearing, wiring

3 syllables:
shivering, slithering, blistering, hindering, glittering, whispering, picturing, glimmering, shimmering, tittering, flickering, fingering, tinkering, withering, figuring, differing, simmering, bickering, rip-roaring, dithering, lingering, blithering, quivering, acquiring, adoring, alluring, appearing, aspiring, assuring, ball bearing, comparing, cone-bearing, conspiring, debarring, declaring, despairing, drop earring, endearing, enduring, ensuring, expiring, exploring, forbearing, forswearing, god-fearing, gold-bearing, ignoring, imploring, inpouring, inspiring, insuring, lake herring, load-bearing, long-wearing, maturing, nonbearing, outpouring, perspiring, preparing, red herring, rehearing, repairing, requiring, restoring, retiring, securing, sheepshearing, smoked herring, thrust bearing, time sharing, uncaring, unerring, unfearing, unhearing, unsparing, untiring, veneering, young-bearing

4 syllables:
delivering, considering, awe-inspiring, buccaneering, cheeseparing, colored hearing, disappearing, domineering, engineering, hard-of-hearing, interfering, journal bearing, needle bearing, overbearing, overpowering, pendant earring, persevering, pioneering, power steering, profit sharing, racketeering, reassuring, rocket firing, roller bearing, sense of hearing, shoe repairing, sloganeering, talebearing, unforbearing, uninspiring, volunteering

5 syllables:
atlantic herring, electioneering, energy-storing, heraldic bearing, king of the herring, organ of hearing, pacific herring, unreassuring

6 syllables:
bioengineering, civil engineering, confirmation hearing, naval engineering

7 syllables:
administrative hearing, chemical engineering, genetic engineering, nuclear engineering

8 syllables:
automotive engineering, electrical engineering, mechanical engineering

9 syllables:
aeronautical engineering, architectural engineering

10 syllables:
master of science in engineering

11 syllables:
bachelor of science in engineering