Hither and YON is an adverbial phrase used to describe a wide range of movement or activity. It is often used to describe a person or thing that is moving or going in different directions, or to a variety of places. The two words that make up the phrase, 'HITHER' and 'YON, ' are both adverbs, with 'HITHER' meaning 'toward this place' and 'YON' meaning 'in that direction.' The crossword solutions for the term 'HITHER and YON' are 'RANDOM' and 'adverbs, ' both of which accurately describe the phrase.