Sufi
Concise Oxford English Dictionary © 2008 Oxford University Press:
Sufi /ˈsuːfi/
▶noun (pl. Sufis) a Muslim ascetic and mystic.
– derivatives
Sufic adjective,
Sufism noun.
Sufic adjective,
Sufism noun.
– origin C17: from Arab. ṣūfī, perh. from ṣūf ‘wool’ (referring to the woollen garment worn).
'Sufi' also found in these Oxford entries:

