Question

what is the meaning of nonplusse?​

Answer 1

Answer:

unsure about what to say, think, or do : perplexed She was nonplussed, but quickly collected herself, explained that the plumbing had been acting up for days, and told them to pay it no mind.—

Answer 2

Explanation:

Nonplusse means to be perplexed, but a modern usage has sprung up to mean nonchalance.