Here are some other ways to say welcome in Sanskrit:
* आगमनम् (āgamanaṁ) - Arrival
* आभिनन्दनम् (ābhīnandanam) - Greeting
* शुभमंगलम् (śubhamaṅgalam) - Auspicious
* अभिनन्दन (abhinandan) - Greetings (informal)
The most common and widely used word is स्वागतम्.