The definition of participate is to take part in an activity.
To understand; comprehend:
Listen is defined as to make an effort to hear or pay close attention to someone or something.
To hear or see (information, for example):
Find another word for tune-in. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for tune-in, like: participate, join, see, get hip, become part of, enter-into, listen and receive.