薄々 (うすうす) Japanese meaning | Kotomora、
やっぱり
そう
だっ
た
ん
だ
。
I had a vague feeling it was the case, and sure enough, it was.
うすうすUsage53%
Kana spelling is common in everyday writing.
薄薄Usage1%
Non-repetition kanji form; less common than 薄々.
Etymology
Reduplication of 薄い (usui, 'thin, faint'), with the meaning of 'faintly, vaguely'.