Entry Word: sure

Function: adjective

Meaning: 1 having or showing a mind free from doubt <are you absolutely sure that she said she was coming today?> — see certain 2
2 impossible to avoid or evade <the jokeʼs a sure dud if you donʼt pause in the right places> — see inevitable
3 not likely to fail <a sure cure for the winter blues—a week in the Bahamas> — see infallible 2
4 worthy of one's trust <a sister is a sure friend for life> — see dependable