Appendix:Arabic roots/ر ء س

Compare the Hebrew word רֹאשׁ (rōš), written with an א indicating the former presence of a glottal stop, as in Arabic.

ر ء س • (r ʔ s)

1. related to the head

Verbs and verbal derivatives

• Form I: رَأَسَ (raʔasa, “to be in charge of, to preside over”)
  • Verbal noun: رِئَاسَة (riʔāsa, “leadership, management, presidency, supervision”)
  • Active participle: رَائِس (rāʔis, “being in charge, presiding over”)
  • Passive participle: مَرْؤُوس (marʔūs, “subordinate”)
• Form II: رَأَّسَ (raʔʔasa, “to appoint as chief”)
  • Verbal noun: تَرْئِيس (tarʔīs)
  • Active participle: مُرَئِّس (muraʔʔis)
  • Passive participle: مُرَأَّس (muraʔʔas)
• Form V: تَرَأَّسَ (taraʔʔasa, “to be in charge of, to preside over”)
  • Verbal noun: تَرَؤُّس (taraʔʔus, “management, chairmanship”)
  • Active participle: مُتَرَئِّس (mutaraʔʔis)
  • Passive participle: مُتَرَأَّس (mutaraʔʔas)
• Form VIII: اِرْتَأَسَ (irtaʔasa, “to be or become the chief”)
  • Verbal noun: اِرْتِئَاس (irtiʔās)
  • Active participle: مُرْتَئِس (murtaʔis)

Nouns and adjectives

• رَأْس (raʔs, “head, chief, top, end, cape”)
• رَأْسِيّ (raʔsiyy, “head, main, principal, vertical”)
• رَئِيس (raʔīs, “head, leader, boss, manager, president, etc.”)
• رَئِيسِيّ (raʔīsiyy, “main, principal”)
• رِئَاسِيّ (riʔāsiyy, “supervisory, presidential, executive”)