As a noun strongness

is the state or condition of being strong; strength.

As an adjective undefined is

lacking a definition or value.

As a verb retrieve

is to regain or get back something.

As a noun retrieve

is a retrieval.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between electronvolts and voltage

is that electronvolts is while voltage is (physics) the difference in electrostatic potential between two points in space.

As a noun bouzouki

is (musici) a greek long-necked plucked fretted lute having a sharp, metallic sound.

As an adjective undefined is

lacking a definition or value.

As a verb sanitise

is .

As an adjective undefined is

lacking a definition or value.

As a noun autoflash

is (photography) a camera feature that automatically enables the flash in limited lighting conditions.

As an adjective undefined is

lacking a definition or value.

As a noun lesion

is lesion.

As an adjective undefined is

lacking a definition or value.

As a noun hydrogel

is a colloid gel in which water is the continuous phase; they have a number of medical and industrial applications.

As an adjective undefined is

lacking a definition or value.

As adjectives the difference between severe and undefined

is that severe is severe, harsh while undefined is lacking a definition or value.

As a noun antithesis

is a proposition that is the diametric opposite of some other proposition.

As an adjective undefined is

lacking a definition or value.