taisbean

reveal, Irish taisbeanaim, Early Irish taispenim, taissfenim, Old Irish asfenimm, testificor, doairfenus, exploravi; the old Gaelic root is fen, ben, which may be cognate to Greek $$Gfaínw (see taibhse). Zeuss regarded the s as put before the b by metathesis, the word being of the same origin as taibhse.