Yardbird is a colloquial term used to refer to a military recruit or a prison inmate. The term has no direct antonyms in the English language, but it can be described with a few different words that carry opposite connotations. For instance, instead of yardbird, one might use the terms veteran, expert, or skilled to describe someone who has been in the military for a long time, or who possesses considerable abilities. Similarly, a person who is not a prisoner or recruit might be referred to as a civilian, or simply as a free individual. Though not direct antonyms, these words serve to contrast with the idea of someone who is confined or inexperienced.