1. Definitely or positively ('sure' is sometimes used informally for 'surely')
   "it's going to be a good day for sure"
   - surely, certainly, sure, for certain, sure enough, sure as shooting

1. Not open to doubt
   "she wanted to go; that was for sure"

See also: unquestionable

• bull nettle
• bull pine
• Bull Run
• bull session
• bull shark
• bull snake
• bull thistle
• bull through
• bull tongue
• bull's eye
• bulla
• bullace
• bullace grape
• bullate
• bullbat
• bullbrier
• bulldog
• bulldog ant
• bulldog clip
• bulldog wrench
• bulldoze
• class
• class Acrasiomycetes
• class act
• class Actinozoa