viability has been vs viability was

Both phrases are correct, but they are used in different contexts. 'Viability has been' is used when referring to the current state of viability, while 'viability was' is used when talking about viability in the past. The choice between the two depends on the timeframe being discussed.

Last updated: March 26, 2024

viability has been

This phrase is correct and commonly used when referring to the current state of viability.

This phrase is used to indicate that the viability of something has been established or is currently in existence.

Alternatives:

viability is
viability remains
viability continues to be
viability has remained
viability has proven to be

viability was

This phrase is correct and commonly used when referring to the past state of viability.

This phrase is used to indicate that the viability of something existed in the past but may not be the case currently.

Alternatives:

viability used to be
viability had been
viability was once
viability was previously
viability was established

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viability has been vs viability was