Spectacularly rhymes with:
circularly, particularly, circularly, extracellularly, irregularly, particularly, popularly, regularly, singularly, circularly, extracellularly, irregularly, particularly, popularly, regularly, similarly, singularly
circularly, particularly, circularly, extracellularly, irregularly, particularly, popularly, regularly, singularly, circularly, extracellularly, irregularly, particularly, popularly, regularly, similarly, singularly