The term 'SOB SYLLABLE' is composed of two words, 'HOO' and 'WAH'. The word 'HOO' is an interjection used to express surprise, grief, or excitement. It is also used to call attention to someone or something. The word 'WAH' is an interjection used to express sorrow, grief, or lamentation. Together, these two words form the term 'SOB SYLLABLE', which is used to describe a sound made when crying or sobbing.