What does "self-restraint" mean?

Self-control, control over one's emotions, passions and actions.

What is a synonym for "self-restraint"?

Common synonyms include: abnegation, abstentions, abstinence, aplomb, assurance, balance.

noun

noun ·Uncommon ·College level

Noun

1
Self-control, control over one's emotions, passions and actions. uncountable
"His lack of self-restraint led to several ugly scenes of debauchery and violent outburst."
2
exhibiting restraint imposed on the self wordnet

"He refused to exercise self-restraint."

From self- + restraint.