Wellness rhymes with:
awfulness, coolness, dullness, fickleness, forcefulness, foulness, fullness, gentleness, harmfulness, idleness, illness, peacefulness, playfulness, reasonableness, resourcefulness, smallness, stillness, truthfulness, usefulness, wastefulness, wistfulness, wonderfulness
Wellness sounds like:
wailing, walinsky, walling, wallowing, wehling, welinsk, wellens, welling, wellons, whaling, wheeling, wheeling's, wholeness, wilensky, wilhelms, wiliams, wiling, wilinski, willaims, willems, willens, william's, williams, williams', williams's, willing, willms, wilmes, wilms, wolanski, wolenzac, wolenzac's, wolinski, wolinsky, woolens, woolums