adjective

impossible

impossible, unachievable, unbearable

It's impossible to finish this work today.

It's impossible to finish this work today.

He is an impossible person to work with.

He is an impossible person to work with.

it is impossible ((to-inf)) it cannot be done It's impossible to know everything.

an impossible ((noun)) a very difficult (noun) He is an impossible child.

Synonyms: unachievable, unattainable, unworkable; Antonyms: possible, achievable, feasible

From Latin 'impossibilis', from 'im-' (not) + 'possibilis' (possible).

The prefix 'im-' often means 'not', so it's 'not possible'.

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