Superficial or Without Serious Purpose
Puzzle 14 of City Nicknames Hard Pack
Question is: Superficial or Without Serious Purpose
and the answer is: FRIVOLOUS
Word Meaning:
FRIVOLOUS — Silly, especially at an inappropriate time or in an inappropriate manner; lacking a good reason for being, or for doing what one does; due to or moved by a caprice or whim.
Definitions from Wiktionary.