impossible

appear, be, look, prove, seem, sound

become

remain

make sth, render sth

The broken bridge rendered it impossible for us to reach the village.

believe sth, consider sth, deem sth, find sth, regard sth as, see sth as, think sth

Many people regard climbing Mount Everest as impossible without proper training and equipment.

absolutely, completely, quite, totally, utterly

frankly

It would be frankly impossible to finish this project by Friday without more help from the team.

just, simply

Learning a new language at my age is simply impossible, so I've stopped trying.

by no means, far from, not altogether

Learning a new language is by no means impossible if you practice every day.

almost, more or less, near, nearly, next to, nigh on, practically, virtually, well-nigh

Completing the project by Friday seemed practically impossible given how much work remained.

pretty

effectively

literally

apparently, seemingly

theoretically

clearly, obviously

equally

Finding a parking space downtown and getting a concert ticket last-minute are equally impossible tasks.

generally

hitherto, previously

Mobile phones have made communication previously impossible for most people now simple and affordable.

ultimately

economically, financially, logically, logistically, mathematically, politically, physically, scientifically, socially, technically

Building a bridge across the ocean remains technically impossible with current engineering methods.

for

It was impossible for him to finish the project by Friday because he had too much work.

be

become

find sb

My teenage son finds it impossible to wake up before noon on weekends.

bloody

It's bloody impossible to find a parking space in this city during rush hour.

really

absolutely, completely, quite, totally

My younger brother was being totally impossible when we tried to leave for school this morning.

just