Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
sure [ʃuər] adj (definite, convinced) твёрдый*твёрд (aim, friend, remedy) ве́рный*ве́рен
adv (inf)(esp US)
that sure is pretty, that's sure pretty э́то пра́вда ми́ло
to make sure of sth/that удостове́риться (perf) в чём-н/,что
sure! (of course) безусло́вно!
sure enough и пра́вда or впра́вду
I'm not sure how/why/when я не уве́рен, как/почему́/когда́
to be sure of oneself не сомнева́ться (impf) в себе́
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: