-eskar

Etymology
Borrowed from, present active infinitive of. Was probably adopted before Progreso, probably through.

Suffix

 * 1)  begin to, start
 * 2)  become, get
 * 1)  become, get

Usage notes
In early Ido (until the late 1910s) this suffix was used after verbal roots to form a verb with exclusively an inchoative active meaning.