The term "lowest social class" can be replaced with a range of synonyms depending on the context, location, and cultural specificity. Some of the alternatives include the underprivileged, the marginalized, the impoverished, the destitute, the underclass, the have-nots, the dispossessed, the neglected, the deprived, and the disadvantaged. While the terms may vary in tone or degree of respect, they all indicate a group of people who have limited access to economic or social resources, face discrimination, and experience social exclusion. It is important to note that these terms should be used with sensitivity and awareness of their historical and political implications.