a strict disciplinarian
The synonym for disciplinarian is authoritarian.
Authoritarian or disciplinarian.
The antonym for disciplinarian is lenient or lax.
The teacher was considered a strict disciplinarian because she assigned students detention for the smallest infraction of rules.
Dictionary.com defines disciplinarian as "a person who enforces or advocates discipline:The teacher was a formidable disciplinarian."Amusingly, it gives the origin as being "1575--85; discipline + -arian".As Related Words it offers martinet and moralist.
A person who enforces discipline is often referred to as an enforcer, disciplinarian, or a strict disciplinarian.
A person who disciplines another can be called a disciplinarian or an authority figure.
Wodehouse Playhouse - 1974 Portrait of a Disciplinarian 1-3 is rated/received certificates of: Australia:G
The parents....<3 :D
Idealism
di-sci-plin-ar-i-an has 6 syllables.