could have been

Related

would have been · lost · chance · potential · possibility · alternate · parallel · wistful · longing · hindsight · different · imagined · unrealized · dream · fate · destiny · sliding doors · what if

Opposites
modal certainty

could have beenwas

Had being once

is · became · has been

temporal realization

could have beenbecame

Transitioned to being

came to be · turned into · came to pass

Familiarity
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