-it-

Etymology
The i vowel of past-tense -is plus the t of the Latin/Romance/German passive perfect participle.

Suffix

 * 1)  -ito One who has undergone the action of the root
 * Example:
 * 1)  -ita The passive past participle
 * Example:
 * 1)  -ite The passive past participle
 * Example: