curiously
adv.in a way that shows you are interested in something and want to learn more. It can also mean that something is strange or unusual.
adv.in a manner that demonstrates inquisitiveness or interest; alternatively, used to indicate that a situation is strange or unexpected.
“The cat looked curiously at the moving shadow.”
“Curiously, the front door was unlocked even though the family had been away for a week.”
“The researchers looked curiously at the data, noting that the results contradicted every hypothesis they had formulated during the initial planning phase.”
When used to mean 'strangely', it often functions as a sentence adverb at the start of a clause.
“He cites the painting Tarini , “in which it has been suggested an enveloping sari assumes the form of India (though curiously an India without Bengal).”
From Middle English curiusly, curyously, curiosly, curiouseliche, curyouslyche, equivalent to curious + -ly.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.