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262.
 Many í-verbs or verbs of the Fourth
Conjugation are formed from i-stems:
-
 
-  mólior,
-írí, to toil, from mólés (-is), mass.  
- finió, -íre,
to bound, from fínis,
end.  
- sitió, -íre,
to thirst, from sitis,
thirst.  
- stabilió, -íre,
to establish, from stabilis,
stable.  
a. Some arise by confusion from other
stems treated as i-stems: -  
-  bullió,
-íre, to boil, from bulla (stem bullá-), bubble.  
- condió, -íre,
to preserve, from condus
(stem condo-), storekeeper. 
- ínsánió,
-íre, to rave, from ínsánus (stem ínsáno-), mad.  
- gestió, -íre,
to show wild longing, from gestus (stem gestu-), gesture.  
NOTE:  Some of this form are of doubtful origin:  as, órdior, begin, cf.  órdó and exórdium.  The formation is closely akin
to that of verbs in -ió of the
third conjugation (p.  102). 
b. Some are formed with -ió from consonant stems: -  
-  cústódió,
-íre, to guard, from cústós (stem cústód-), guardian.  
- fulgurió, -íre,
to lighten, from fulgur,
lightning.  
NOTE:  Here probably belong the so-called desideratives
in -urió (see § 263.4.  N.). 
 
 
 
