ex ‧ pec ‧ tan ‧ cy /ɪkˈspektənsi/ BrE AmE noun [uncountable]
[ Word Family: noun : ↑ expectancy , ↑ expectation ; adverb : ↑ expectantly , ↑ unexpectedly ; adjective : ↑ expectant , expected ≠ ↑ unexpected ; verb : ↑ expect ]
the feeling that something pleasant or exciting is going to happen:
I saw the look of expectancy in the children’s eyes.
⇨ ↑ life expectancy