[*] 262. Many ī-verbs or verbs of the Fourth Conjugation are formed from i-stems:—
- mōlior, -īrī, to toil, from mōlēs (-is), mass.
- fīniō , -īre, to bound, from fīnis, end.
- sitiō , -īre, to thirst, from sitis, thirst.
- stabiliō , -īre, to establish, from stabilis, stable.
- bulliō, -īre, to boil, from bulla (stem bullā-), bubble.
- condiō, -īre, to preserve, from condus (stem condo-), storekeeper.
- īnsāniō, -īre, to rave, from īnsānus (stem īnsāno-), mad.
- gestiō, -īre, to show wild longing, from gestus (stem gestu-), gesture.
[*] Note.--Some of this form are of doubtful origin: as, ōrdior, begin, cf. ōrdo and exōrdium . The formation is closely akin to that of verbs in -iō of the third conjugation (p. 102).
[*] b. Some are formed with -iō from consonant stems:—- cūstōdiō, -īre, to guard, from cūstōs (stem cūstōd-), guardian.
- fulguriō , -īre, to lighten, from fulgur, lightning.
[*] Note.--Here probably belong the so-called desideratives in -uriō (see § 263. 4. N.).