Explanation:(definition to help with similar questions in the future) In grammar, an intransitive verb does not allow a direct object. This is distinct from a transitive verb, which takes one or more objects. The verb property is called transitivity. Intransitive verbs are often identified as those that can't be followed by who or what.
"Early" and "reluctantly" are adverbs. "Early" helps the verb "retired" by telling when. "Reluctantly" describes how the baby boomers feel about "looking" for another job. Hope this helped. :D