NSW Opportunity Class
Ineffable
adjective/in-ef-uh-buhl/
too great or extreme to be expressed or described in words.
In contextThe beauty of the landscape was ineffable.
Remember it
In- (not) + effable (speakable): ineffable feelings are simply too big for words.
Use it well
Use for overwhelming beauty, joy or wonder: 'ineffable beauty'; a lift-your-essay word.