Perhaps: the lowest class. (Cf. lag-end n. at special uses.) Obsolete. rare.

With the: the most disreputable or the lowest element of a class, community, etc.; the common run of people; the rabble; = riff-raff, n.1 1b.

In South India: the fifth and lowest social rank in Hindu society, traditionally considered to be outside the four caste divisions of the varna…

A class of society or social grouping consisting of the lower stratum of the working class; (in singular and plural) the members of such a class. Cf…

The lowest class in society; the poor, the masses. Cf. earlier proletarian, adj. 2. Also figurative and in extended use.

U.S. figurative. The lowest class of society; a person of this class.

= underworld, n. 4.

A sphere or region lying or considered to lie below the ordinary one. Hence also (figurative), a lower, or the lowest, stratum of society, etc.

A subordinate social class; spec. the lowest social stratum in a country or community, consisting of the poor and the unemployed.

A term applied, originally by Karl Marx, to the lowest and most degraded section of the proletariat; the ‘down and outs’ who make no contribution…

any institution considered as comparable to the four estates (estate, n. 7).

(A category of) people living in a relatively wealthy nation, yet in conditions of extreme deprivation or poverty, esp. an urban underclass; the…