The Safaitic word ʿm
Word ʿm
ʿ m
Transliteration ʿamm
Meaning grandfather

Comments
paternal

Other words that might be of interest
bn ‘son’, bnt ‘daughter’, mrʾt ‘wife, woman’, mrʾ ‘man, husband’, ʾm ‘mother’, ʾhl ‘family’, ʾẖt ‘sister’, ʿrs¹ ‘wedding’