Allusions rhymes with:
conclusions, delusions, exclusions, illusions, inclusions, conclusions, confusions, contusions, delusions, exclusions, illusions, inclusions, infusions, intrusions, transfusions
Allusions sounds like:
alaskans, alcan's, aligning, aligns, alkanes, alkenes, alleghenies, allegheny's, allegiance, allegiances, alleging, allgemeines, allison's