232. The suffix "-igx-" is used to form intransitive verbs of an
"inchoative" nature.
a. Inchoative verbs from the roots of "intransitive verbs" indicate
the "beginning" or "coming into existence" of the act or condition
expressed in the root:
sidigxi, to become sitting, to sit down, to take a seat.
starigxi, to become standing, to stand up.
b. Intransitive verbs may be similarly formed from the roots of
"transitive" verbs, and indicate an action of the verb not immediately
due to the subject's acting upon itself (as in the case of reflexive
verbs, 41) and not caused by any direct agency (as in the case of the
passive voice, 169):
La pordo fermigxas, the door closes (goes shut).
La veturilo movigxas, the vehicle moves.
La brancxo rompigxas, the branch breaks.
Grupo da personoj kolektigxis, a group of persons gathered.
[Footnote: Cf. the examples given and the following sentences in which
the same verbal roots are used in the simple form and in the passive
voice:
Ni fermas la pordon, La pordo estas fermita,
we close the door. the door is (has been) closed.
Oni movas la veturilon, La veturilo estas movata,
they move the vehicle. the vehicle is being moved.
Mi rompas la brancxon, La brancxo estas rompita,
I break the branch. the branch is (has been) broken.
Li kolektis florojn, Floroj estas kolektitaj,
he gathered flowers. flowers have been gathered.]
c. Intransitive verbs may similarly be formed from "adjectival" roots,
and indicate the acquiring of the characteristic or quality expressed in
the root:
lacigxi, to become tired, to get tired.
varmigxi, to become warm, to get warm.
maljunigxi, to become old, to age.
d. Verbs may similarly be formed from noun-roots, adverbs,
prepositions, prefixes and suffixes whose meaning permits:
amikigxi, to become a friend. kunigxi, to become joined.
forigxi, to go away, to disappear. ebligxi, to become possible.