Babylon NG
Simply the best definition!

Download it's free

a la expectativa

A Spanish-English Dictionary (Granada University, Spain), 14.4

Download this dictionary
estar a la expectativa de
= be on the alert for.
Ex: Of course the perceptive librarian is on the alert for signs of this reaction on the part of the reader, but, sad to relate, there are those who will be deterred by nothing short of a loud cry of 'Stop'.