Informal, chiefly North American; used as an intensifier meaning 'certainly' or 'very'.
Translations
He sure looks happy today.
Il a certainement l'air heureux aujourd'hui.
vraimentEmploi intensif devant un adjectif ou un adverbe. It sure was cold last night.
Il faisait vraiment froid la nuit dernière.
Certainly; without doubt; definitely (used to emphasize the truth of a statement). He sure looks happy today.
To a great extent; very (used as an intensifier before adjectives or adverbs). It sure was cold last night.