"avoid" => verb

This is a transitive verb and it must have an object.

Meanings:
            1.to stay away from a person, place, situation, etc. => Example: "He's been avoiding me all week." ● "Try to avoid the city centre.

            2.to prevent something from happening. => Example: "Book early to avoid disappointment."

            3.avoid doing something: to intentionally not do something. => Example: "She managed to avoid answering my question.

●avoidable (adj.): possible to avoid =>¥Opposite unavoidable.

●avoidance (noun),[Uncountable]: when you avoid something.

USAGE

Avoid doing something

When avoid is followed by a verb, the verb is always in the –ing form.

"I avoided seeing him for several days"

"I avoided to see him for several days"