adjective
surer; -est
[also more ~; most ~]
not used before a noun :not having any doubt about something :convinced or certain
not allowing any doubt or possibility of failure
used to say that something will definitely happen or that someone will definitely do something; usually followed by to + verb
known to be true or correct
firm or solid
calm, steady, and confident
be sure
used to tell someone not to forget to do something
for sure
without a doubt :definitely or certainly
make sure
to find out or do something so that you have no doubt about whether something is true, correct, will happen, etc.
sure of yourself
confident in your abilities
somewhat disapproving :overly confident or arrogant
sure thing
informal - used to say yes or to agree to a request or suggestion
to be sure
formal - used to say that you admit that something is true
adverb
informal
a - used to say yes or to agree to a request or suggestion
b - used to disagree with a negative statement or suggestion
used to emphasize that you agree with the first part of the statement that you are about to make
US - used as an informal way to accept someone's thanks
US - used for emphasis
sure enough
used to say that what happened was not surprising or unexpected
US