Titles and Suffixes: 씨, 님, 선생님, 선배, 팀장

Primary Korean targets: 씨, 님, 선생님, 선배, 후배, 팀장님, 과장님, 사장님, 고객님, 호칭

Why this article exists

Korean learners often want a single safe equivalent for Mr., Ms., teacher, boss, or you. Korean refuses that simplicity. The same person may be 민수 씨 in one context, 민수 님 in a user database, 김 팀장님 at work, 선배님 in a club, 선생님 in a respectful service or expertise context, and just 민수야 among close friends. Address terms are not decorative. They are social grammar.

The core system

The system has suffixes, titles, roles, and avoidance strategies. 씨 is common with names but can be too distant, too flat, or inappropriate upward depending setting. 님 raises respect but can sound customer-service-like or platform-like if attached broadly. Job titles plus 님 are central in workplaces: 팀장님, 과장님, 부장님. 선배/후배 depends on shared institutional sequence. 선생님 is flexible and deserves its own article. Sometimes the best Korean choice is to avoid direct address entirely and use the sentence without 'you.'

Vocabulary map

Worked reading

Mock workplace scene:

지영 씨, 이 자료 팀장님께 공유해 주세요. 그리고 박 선배님한테도 확인 부탁드릴게요.

Three relations appear in one sentence. 지영 씨 addresses a coworker politely but not necessarily upward. 팀장님께 marks the team leader as recipient with honorific particle choice. 박 선배님한테도 invokes seniority; it may be workplace, school, or project-specific. A learner who translates all of these as names loses the social map.

Diagnostic repairs

Practice protocol

Give learners a relationship grid: known name, known title, shared institution, status difference, public/private setting, and intimacy. For each scenario, pick an address term or choose avoidance. Then compare direct address with third-person reference: 팀장님께서 vs 팀장님한테 vs 팀장이.

Suggested visual or tool module

Build an address-term selector. Inputs: speaker age/status, listener role, known name, setting, formality, and relationship. Output: safe options, risky options, and avoid-address strategy.

Remediation and upgrade layer

Second-pass upgrade focus

The address-term article should make readers stop searching for one “polite suffix.” Korean address is role-indexing. 씨, 님, 선생님, 선배, 팀장, 과장, 사장님, and name-only address are not points on a single politeness scale; they are choices about institution, distance, rank, and relationship.

Failure modes to fix in revision

Before/after repair lab

Source and register guardrails

Separate workplace, classroom, hospital, hobby group, online community, customer service, and close friendship. Use transcripts or constructed examples, but label scenario variables clearly: age difference, rank, known name, role, public/private setting, and intimacy.

The decision tree must allow “avoid direct address” as an output. Not every situation needs a term. Add a distinction between direct address, email salutation, third-person reference, and contact-list label. Add warnings for 당신, bare first names, and overextended 님.

Use authentic workplace/email/service examples only if anonymized. The article should not pretend there is one universal rule; corporate culture, age, industry, gender, and region affect address terms.

[Why 선생님 is social](#329-why-선생님-is-a-social-category-not-just-teacher); [Relationship-driven grammar](../101-120/115-relationship-driven-grammar.md); [Honorifics in workplaces](../161-180/170-honorifics-workplaces.md)