Here's a breakdown:
* Mwa-: This prefix indicates politeness, similar to "you" in English.
* -lika: This root word means "to invite" or "to welcome."
So, "Mwalika!" literally means "You are invited!" or "Welcome!"
You can also use "Tulandirani!" which means "We welcome you!". This is a more formal way to say welcome.
Keep in mind that Nyanja is spoken in various regions with slight variations in pronunciation and vocabulary.