cursory
Meaning: brief to the point of being superficial
Usage: Late for the meeting, she cast a cursory glance at the agenda.
facile
Meaning: easy, requiring little effort 2. superficial, achieved with minimal thought or care, insincere
Usage: The business was in such shambles that any quick solution seemed facile; nothing could really help it in the long run.
vacuous
Meaning: lacking content or ideas; empty-headed
Usage: Beyonce realized that the lyrics she had just penned were completely vacuous and tried to add more substance.
shallow
Meaning: lacking depth in thought, feeling, or understanding
Usage: The student’s shallow answer repeated facts without explaining their meaning.