Thoughtless behaviour
reckless behaviour
to change appearance
to alter appearance
Supreme, primary, cardinal
paramount
mutual help
reciprocal help
Difficult to find, define or archive
elusive
keep one's distance from
to steer clear of something
To divide one's community
to segregate
to assure, convince
to cajole
Consequences
Repercussions
Improve the situation
to ameliorate
To light inquisitiveness
to spark inquisitiveness
Obligatory rules
mandatory rules
Flood of complaints
deluge of complaints
To think over
to mull
To cause to deteriorate, decay or vanish
to erode