This is the 110th most frequent Latvian word.
mājās
"At home."
Here, 'mājās' is used to denote a static location, implying being inside one's home.
Mājās es jūtos ļoti ērti.
At home, I feel very comfortable.
In this usage, 'mājās' specifies a location and describes where the action of 'being busy' occurs.
Tu izskatījies tik aizņemts mājās, tāpēc mēs nolēmām neaizkavēt tevi.
You seemed so busy at home, so we decided not to disturb you.
'Mājās' in this context indicates direction towards home, showing movement.