Hebrew also lost the voiceless pharyngeal fricative (Heth/ح) which iirc can only be pronounced by Mizrahi Jews (aka of Jewish Arab origin). It was merged into t

Hebrew also lost the voiceless pharyngeal fricative (Heth/ح) which iirc can only be pronounced by Mizrahi Jews (aka of Jewish Arab origin). It was merged into the voiceless uvular fricative כ khaf (خ in Arabic). Though as I understand it, interestingly the letters themselves are still found in Hebrew with distinct glyphs (ח vs כ) but one has just lost its unique pronunciation.