Pseudo-Hebrew is the artistic use of symbols meant to appear like Hebrew script but that are not in fact Hebrew letters.[1][2][3] The related phenomenon of the use of actual Hebrew letters in ways that do not represent actual language may be called "nonsense Hebrew".[1] Gary Schwartz, an art historian, notes that the use of pseudo-Hebrew in 15th-century art is not distinctive, as other works of the time also contain pseudo-Greek, Hebrew, and Latin.[4]
Resnick, Irven M. (2023). "'Lingua sacra et diabolica': A Survey of Medieval Christian Views of the Hebrew". In Daniel Stein Kokin (ed.). Hebrew Between Jews and Christians. De Gruyter. pp. 67–93. doi:10.1515/9783110339826-004.