The spelling of the word "up rightly" has caused some confusion among English speakers. The pronunciation of the word can be explained using the International Phonetic Alphabet (IPA) phonetic transcription. The "u" is pronounced like the "uh" sound in "butter." The "p" and "r" sounds are straightforward, but the "gh" combination makes a "f" sound, as in "laugh." The "t" is soft and pronounced like a "d." Finally, the "ly" sounds like "lee." Therefore, "up rightly" is pronounced /ˌʌpˈraɪtli/.
The term "up rightly" is not commonly used in modern English, and it does not have a unique etymology as a standalone word. However, we can examine the etymologies of the separate words "up" and "rightly".
1. Up: According to the Oxford English Dictionary, the word "up" originated from various Germanic languages. In Old English, it was spelled as "upp", and it is believed to have derived from the Proto-Germanic word *upp, meaning "upwards" or "on high". Its etymological roots can be traced further back to the Proto-Indo-European root *upo, which had a similar meaning.
2. Rightly: The term "rightly" comes from the Old English word "rihtlice", which means "justly" or "correctly". It is derived from the adjective "riht", meaning "right" or "correct".