/usr/share/myspell/dicts/ is in hunspell-ar 3.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/myspell/dicts/ar.aff
/usr/share/myspell/dicts/ar.dic
/usr/share/myspell/dicts/ar_AE.aff
/usr/share/myspell/dicts/ar_BH.aff
/usr/share/myspell/dicts/ar_DZ.aff
/usr/share/myspell/dicts/ar_EG.aff
/usr/share/myspell/dicts/ar_IN.aff
/usr/share/myspell/dicts/ar_IQ.aff
/usr/share/myspell/dicts/ar_JO.aff
/usr/share/myspell/dicts/ar_KW.aff
/usr/share/myspell/dicts/ar_LB.aff
/usr/share/myspell/dicts/ar_LY.aff
/usr/share/myspell/dicts/ar_MA.aff
/usr/share/myspell/dicts/ar_OM.aff
/usr/share/myspell/dicts/ar_QA.aff
/usr/share/myspell/dicts/ar_SA.aff
/usr/share/myspell/dicts/ar_SD.aff
/usr/share/myspell/dicts/ar_SY.aff
/usr/share/myspell/dicts/ar_TN.aff
/usr/share/myspell/dicts/ar_YE.aff