는가 싶다

it seems; I half-thought that

Attaches to a verb to report a passing impression the speaker is not sure of. It very often runs on into -더니 or -면 to say the impression did not hold up, as in 비가 좀 한참 오는가 싶더니 ('it seemed to be raining a good while, and then...') or 조금 안 맞는가 싶으면 ('if it starts to feel a bit off'). The plainer -는 것 같다 states what something seems to be; -는가 싶다 frames it as a thought that crossed the speaker's mind. The lines here run from casual (싶어가지고) to polite (싶습니다).

Register: neutral; both casual and polite forms appear