Is the pronunciation of "아저씨" same as "아젓시"? I know that the word 아젓시 does not exist but just curious about pronunciation.
Since 아젓시 isn't a real word, it's impossible to know exactly, but we can look at similar words in the dictionary:
칫솔 (toothbrush) is listed with 2 pronunciations:[치쏠] and [칟쏠]. So the first one suggests that 아젓시 would indeed be pronounced like 아저씨, and the second one suggests a slightly different pronunciation. Likewise, 귓속 (inside the ear) can be pronounced [귀쏙] or [귇쏙].
However, 맛소금 (salt + MSG) is listed with just one pronunciation: [맏쏘금].
Likewise, 덧신 (overshoes) is also listed with just one: [덛씬].
The difference between the first two and the latter two may be that the ㅅ in 칫솔 and 귓속 is a 사이시옷 which only appears when two words are joined, so it's easier for it to disappear, whereas in 맛소금 and 덧신, the ㅅ is found in the original words 맛 and 덧, so it doesn't disappear.
So if your word 아젓시 was based on the imaginary word 아젓+시, I think you'd have to pronounce it [아젇씨], but if it were based on the imaginary word 아저 + 사이시옷 + 시, maybe it would be possible to pronounce it 아저씨.
According to the standard, the pronunciation of last consonant must be among 7 consonants: ㄱ(k), ㄴ(n), ㄷ(t), ㄹ(l), ㅁ(m), ㅂ(p), ㅇ(ng). When ㅅ is at the end, as ㅅ's articulation point is the same to ㄷ, ㅅ changes into ㄷ.
Also, since ㅅ in 시 is in front of ㄷ, ㅅ becomes ㅆ.
So, the pronunciation of
아젇씨, which is different from