What is Settle Down?
1.
It means to get married or commit to a monogamous relationship; probably the two most indicative words for the situation itself, born of a word that can mean "to move downward; sink, or descend," "to subdue," and "to conclude," and a word that means the "opposite of up."
"Man looks like Lester finally had to settle down and give up the player lifestyle...man, and settle isn't wrong!"
See
2.
used in heated situations
when ross is tring to sniff ur missus biffon,
you say "come on , settle down"
