11 letters · 18 points in Scrabble
adjective concerned with or comprehending only what is apparent or obvious; not deep or penetrating emotionally or intellectually
adjective of, affecting, or being on or near the surface
adjective of little substance or significance
originBorrowing from Late Latin superficiālis (“of or belonging to the surface”), from superficiēs (“top, surface”) + -ālis (“-al”, adjectival suffix).
Etymology from Wiktionary, CC BY-SA 3.0