Japan's perplexed bankers need not worry.
to be perplexed about sth to be at a loss about sth ⇒
She is perplexed about what to do for her daughter.
to perplex an issue
A perplexed bjp MP remarks, "Where was the need to rush through these ordinances?India Today (1997)
Certainly without enthusiasm, and without much interest, Francis was also mildly perplexed.Dare Call It Treason
I didn't say anything to you at the time, I know: I was very confused and perplexed.Grace
I was disappointed by the editorial (December 3) and perplexed as to why you took such a pro-government line here.The Mercury, Sunday Tasmanian (2004)
I'd have thought --- ' Norrie pushed the strands of hair into place, looking perplexed.TICKLED PINK (2002)
Quite what went awry in the second half had even Wenger looking perplexed.Glasgow Herald (2002)
She also taught English to university students who were at once disillusioned and perplexed by the turbulent events around them.Wise Daughters From Foreign Lands
The study's authors are perplexed by the anomalies they found.Globe and Mail (2003)