울렁울렁 ul-leong-ul-leong

Speakers use this to describe a rolling, nauseating sensation in the stomach caused by indigestion, heavy drinking, or eating too quickly. It frequently pairs with verbs like 뒤집히다, 좋지 않다, and 거북하다. For instance, it appears when explaining that drinking coffee on an empty stomach or eating a meal too rapidly left the stomach feeling unsettled. It also combines with expressions like 소화제를 먹었다 to describe taking medicine in response to this discomfort.

This can evoke a vivid, almost palpable sense of physical unease, highlighting the rolling nature of stomach trouble rather than a sharp pain.

◆ Fluttering Nervousness — Speakers use this to describe the physical pounding or fluttering in the chest caused by sudden fright, stage fright, or severe nervousness. It appears in contexts like encountering a snake unexpectedly or facing a large audience before a performance. It frequently combines with verbs of beating such as 뛰다 and 두근대다, appearing in forms like 가슴이 울렁울렁 뛰다 and 심장이 울렁울렁 뛰다.

Can convey a sense of sudden vulnerability where the body reacts physically to an unexpected mental jolt, making a person feel entirely unmoored before they can regain their composure.

◆ Romantic Palpitations — Speakers use this adverb to describe a heart continuously beating due to being startled, frightened, or nervous. It combines with verbs of motion and feeling like 뛰다, 뛰놀다, and 두근대다, and appears alongside nouns like 가슴 and 심장. In examples, it describes the physical sensation of nervousness before performing in front of many people or being startled by an unexpected sight.

While standard definitions focus strictly on fear or shock, speakers sometimes use it to evoke the tender, nervous fluttering of the stomach or chest when facing a crush or experiencing new love.