가다가

가— (ga-, “to go”) +‎ 다가 (-daga, “while; and then”).

• (SK Standard/Seoul) IPA^(key): [ka̠da̠ɡa̠]
• Phonetic hangul: [가다가]

가다가 • (gadaga)

1. A sequential form of 가다 (gada, “to go”): while going; [was] going, and then

가다가 • (gadaga)

1. sometimes, occasionally, now and then

   가끔 가다가 이상한 기분이 들 때가 있다.

   Gakkeum gadaga isanghan gibun-i deul ttae-ga itda.

   Sometimes now and then, I get a weird feeling.

The adverb is more common with topic-marker 는 (neun), or modified by synonymous adverbs such as 가끔 (gakkeum, “occasionally”), than in isolation.