dumber

As an adjective dumber

is (dumb).

As a noun terms is

.

As an adjective dumber

is (dumb).

As a verb dumben is

to make dumb.

As adjectives the difference between dumber and umber

is that dumber is (dumb) while umber is of a reddish brown colour, like that of the pigment.

As a noun umber is

a brown clay, somewhat darker than ochre, which contains iron and manganese oxides.

As an adjective dumber

is comparative of dumb.

As a verb dumbed is

past tense of dumb.

As a noun dumper

is a small one-man diesel-powered vehicle often used to carry loads and material around, often on building sites.

As an adjective dumber is

comparative of dumb.

As an adjective dumber

is (dumb).

As a verb cumber is

(dated) to slow down, to hinder, to burden.

As an adjective dumber

is (dumb).

As a noun dubber is

one who dubs, or gives a name.

As a noun lumber

is (uncountable) wood intended as a building material.

As a verb lumber

is to move clumsily.

As an adjective dumber is

(dumb).