couldn't've
Was unable to
Couldn't've is a double contraction of "could not have," common in speech but rarely written: I couldn't've known she was lying.
Like other double contractions (shouldn't've, wouldn't've), it appears mainly in dialogue or informal writing that captures how people actually talk.
Reduction in size
- slangInformal in-group vocabulary
- colloquialCasual, everyday language
- casualRelaxed and informal
- vernacularEveryday regional speech
spoken · conversational · relaxed · everyday · dialectal · nonstandard · ain't · shouldn't've
Lacking necessary capacity
- incapableLacking requisite ability
- impossibleIncapable of occurring
- helplessUnable to act independently
- powerlessLacking strength or authority
futile · hopeless · unachievable · insurmountable · unattainable · beyond · unreachable · inconceivable
Recognition after the fact
- missedFailed to reach
- opportunityFavorable circumstance for advancement
- chanceLikelihood of occurrence
- shouldaOught to have, casually
woulda · retrospect · lament · unfortunate · wishful · remorse · rueful · wistful
Impossible to accept as true
- incredibleDefying easy belief
- astonishingCausing great wonder
- shockingCausing intense surprise
- surprisingCausing mild shock
amazed · stunned · floored · gobsmacked · flabbergasted · dumbfounded · speechless · bewildered
Offered reason for wrongdoing
- alibiDefense of location
- justificationReason proving rightness
- explanationStatement making something clear
- denialRefusal to accept reality
innocent · blameless · exoneration · vindication · cleared · acquitted · misunderstood · scapegoat
contraction
Reduction in size
- slangInformal in-group vocabulary
- colloquialCasual, everyday language
- casualRelaxed and informal
vernacular · spoken · conversational · relaxed · everyday · dialectal · nonstandard · ain't · shouldn't've · wouldn't've
unable
Lacking necessary capacity
- incapableLacking requisite ability
- impossibleIncapable of occurring
- helplessUnable to act independently
powerless · futile · hopeless · unachievable · insurmountable · unattainable · beyond · unreachable · inconceivable · unmanageable
hindsight
Recognition after the fact
- missedFailed to reach
- opportunityFavorable circumstance for advancement
- chanceLikelihood of occurrence
shoulda · woulda · retrospect · lament · unfortunate · wishful · remorse · rueful · wistful · bygone
unbelievable
Impossible to accept as true
- incredibleDefying easy belief
- astonishingCausing great wonder
- shockingCausing intense surprise
surprising · amazed · stunned · floored · gobsmacked · flabbergasted · dumbfounded · speechless · bewildered · astounded
excuse
Offered reason for wrongdoing
- alibiDefense of location
- justificationReason proving rightness
- explanationStatement making something clear
denial · innocent · blameless · exoneration · vindication · cleared · acquitted · misunderstood · scapegoat · framed
couldn't'vecould've
Past possibility contraction
could have · must've · must have · was able to · would've