A lot of unpronounced letters are actually pronounced conditionally, for example in “Je suis un homme” the last s of suis is pronounced because it is followed by a vowel.
Silent h. (Of courses there are some rare, non silent Hs)
Edit : actually the op was talking about the liaison between “sans” and “un” here. Though you do also do the same for the N of “un” and the O of “homme” in this sentence according to the same rules (and since that H is silent)
A lot of unpronounced letters are actually pronounced conditionally, for example in “Je suis un homme” the last s of suis is pronounced because it is followed by a vowel.
homme
Silent h. (Of courses there are some rare, non silent Hs)
Edit : actually the op was talking about the liaison between “sans” and “un” here. Though you do also do the same for the N of “un” and the O of “homme” in this sentence according to the same rules (and since that H is silent)
It is pronounced z however, and not s
Je sui zun nomme
Je suis un omelete du fromaaaaage