ସ୍ୱାଗତମ୍ (Swagatam)
This is the formal and polite way to say welcome. It's used for all occasions.
You can also use these phrases depending on the situation:
* ସ୍ୱାଗତ (Swagata) - Welcome (more casual)
* ଆପଣଙ୍କୁ ସ୍ୱାଗତ (Aapankuu swagata) - Welcome (formal, addressed to one person)
* ଆପଣମାନଙ୍କୁ ସ୍ୱାଗତ (Aapanamankaau swagata) - Welcome (formal, addressed to multiple people)
It's also customary to say "ସୁସ୍ୱାଗତମ (Suswagatam)" which means "most welcome" or "very welcome."
No matter which phrase you choose, it's always good to add a smile and a friendly tone to your greeting.