This study analyzes the semantic expansion of the Korean gustatory adjective ‘daldalhada’ from a cognitive linguistic perspective and examines its pragmatic constraints and enregisterment across generations sociopragmatically. A survey of 151 native Korean speakers revealed the following four main findings. First, while individuals in their 20s and 30s lead the daily usage, over 95% of all generations recognize it as a universal term, indicating stable lexical diffusion. Second, 'daldalhada' developed a polysemous semantic network through metaphor and metonymy from its gustatory prototype. Third, pragmatic constraints limit its use in formal discourse and in upward hierarchies. Fourth, despite these constraints, younger demographics actively use it in private discourse to express worldviews that value everyday happiness. Thus, ‘daldalhada’ has settled as an independent register representing the younger generation's identity. These findings provide practical data for revising lexicographical descriptions and developing pedagogical guidelines for Korean language education.

Abstract
1. 서론
2. 이론적 배경
    2.1. 연령 변인과 진행 중인 언어 변화
    2.2. 인지언어학적 관점에서의 의미 확장 기제
    2.3. 담화 상황에 따른 사용역(Register)과 화용론적 제약
    2.4. 화용적 동기와 지표적 레지스터화
3. 연구 방법
    3.1. 연구 문제
    3.2. 연구 대상 및 절차
    3.3. 연구 도구
    3.4. 자료 분석 방법
4. ‘달달하다’의 의미 확장과 레지스터화 과정 분석
    4.1. 세대 변인에 따른 사용 빈도와 메타언어적 인식
    4.2. ‘달달하다’의 의미 확장에 대한 수용 양상
    4.3. 담화 상황 변인에 따른 화용론적 제약
    4.4. ‘달달하다’의 화용적 동기와 레지스터화 양상
5. 결론 및 제언
참고문헌

• 임하정(Ph.D. Student, School of Liberal Arts, Korea University; 145 Anam-ro, Seoul 02841, South Korea) | Hajeong Yim