A person who imitates or apes another.

Having no matter or substance. / So insubstantial as to be irrelevant.

a photoelectric device for intensifying faint astronomical images

Something or someone that is unique and individual. / A state where a product or idea cannot be copied, usually because of copyright rules.

(advertising) A consumer's perception of a brand.

The subjective inner picture of one's outward physical appearance.

An immigrant who has entered a country (often as a migrant worker) and has no documentation authorizing them to (still) be present there.

(colloquial) The exact likeness (of someone).

The quality of being imbecile; weakness; feebleness, especially of mind. / Something imbecilic; a stupid action, behaviour, etc.

The state of being immanent; inherency. / The state of dwelling within and not extending beyond a given domain.