Is “Apex” a Scrabble word?
Yes
APEX
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Apex
/ˈeɪˌpɛks/
noun
1.Conical priest cap
2.The highest or the greatest point of something.
“the apex of the building”
3.The moment of greatest success, expansion, etc.
“the apex of civilization”
Synonyms: peak, summit, top, acme, culmination, height