[ ʃɔ: , ʃʊə ]
■ adjective
1》 completely confident that one is right.
2》 ( ~ of/to do something ) certain to receive, get, or do something.
3》 undoubtedly true; completely reliable.
4》 confident or as~d.
■ adverb [often as exclamation ] informal, chiefly N. Amer. certainly.
Phrases
be ~ [usu. in imperative ] do not fail.
for ~ informal without doubt.
make ~ confirm or en~.
~ enough informal used to introduce a statement that confirms something previously predicted.
~ thing informal a certainty.
↘[as exclamation ] chiefly N. Amer. certainly.
to be ~ certainly; it must be admitted.
Derivatives
~ness noun
Origin
ME: from OFr. sur , from L. securus 'free from care'.