The spelling of the phrase "hast hunch" is somewhat archaic and may be confusing to modern English speakers. "Hast" is an old-fashioned word meaning "have" or "has," while "hunch" is a noun or verb meaning a feeling or movement indicating intuition. The pronunciation of "hast" is /hæst/ and "hunch" is /hʌn(t)ʃ/. In modern usage, the phrase would likely be written as "have a hunch" or "has a hunch."