Interjections rhymes with:
injections, objection's, objections, projections, rejections, affections, collections, complexions, confections, connections, corrections, defections, directions, dissections, election's, elections, erections, imperfections, infections, inflections, injections, inspections, interconnections, intersections, objection's, objections, predilections, projections, protections, recollections, reflections, rejections, section's, sections, selections
Interjections sounds like:
interacting, interactions, interceding, interesting, interrogating, interrogations, intersecting, intersections