The definition of disappointment

I was very excited for a few moments there. In looking up a puzzle answer, I came across the suggested word "epigaeous" - wow! What a fantastic word for a game of Scrabble - there's at least one of every vowel and it sounds great (or would if I knew how to produce it ... but, alas, if there is mo definition for it - and there appears not to be - it doesn't count! Oops, always good to get a second - or third opinion - it apparently means "Growing on, or close to, the ground.". (If we play Scrabble together ... you never saw this!)