slummer

As an adjective slummier

is comparative of slummy.

As a noun slummer is

an inhabitant of a slum.

As a noun slummer

is an inhabitant of a slum.

As a verb slummed is

past tense of slum.

As nouns the difference between slammer and slummer

is that slammer is one who, or that which, slams while slummer is an inhabitant of a slum.

As nouns the difference between slummer and slumber

is that slummer is an inhabitant of a slum while slumber is a very light state of sleep, almost awake.

As a verb slumber is

to be in a very light state of sleep, almost awake.

As a noun slummer

is an inhabitant of a slum.

As an adjective glummer is

(glum).

As nouns the difference between slummer and slimmer

is that slummer is an inhabitant of a slum while slimmer is a person who is trying to become slim by dieting.

As an adjective slimmer is

(slim).

As nouns the difference between slummer and scummer

is that slummer is an inhabitant of a slum while scummer is an instrument for taking off scum or scummer can be excrement, scumber.

As a verb scummer is

scumber.

As nouns the difference between summer and slummer

is that summer is one of four seasons, traditionally the second, marked by the longest and typically hottest days of the year due to the inclination of the Earth and thermal lag. Typically regarded as being from June 21 to September 22 or 23 in parts of the USA, the months of June, July and August in the United Kingdom and the months of December, January and February in the Southern Hemisphere while slummer is an inhabitant of a slum.

As a verb summer

is to spend the summer, as in a particular place on holiday.

As a proper noun Summer

is {{given name|female|from=English}} of modern usage, for a girl born in summer.