at a nonplus ( synonym found)
Definition of at a nonplus:

(v) : to perplex or bewilder someone; to confound or flummox
(n) : a state of perplexity or bewilderment
Definition of at a nonplus:

(v) : to perplex or bewilder someone; to confound or flummox
(n) : a state of perplexity or bewilderment
Back to Top