attend to is a verb meaning "get down to; pay attention to; take seriously". It carries 2 recorded senses.
get down to; pay attention to; take seriously
“Attend to your duties, please”
work for or be a servant to
“May I serve you?”
“She attends the old lady in the wheelchair”
“Can you wait on our table, please?”
“Is a salesperson assisting you?”
“The minister served the King for many years”
Definitions, synonyms and semantic relations for attend to come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.