Noun
a participle that expresses completed action
Source: WordNetAmE, but not BrE, has forgot as a less common alternative to forgotten for the past participle of forget. Source: Internet
All other verbs use the perfect tense (hê + past participle) for the past. Source: Internet
Gotten is also typically used in AmE as the past participle for phrasal verbs using get, such as get off, get on, get into, get up, and get around: If you hadn't gotten up so late, you might not have gotten into this mess. Source: Internet
However, embarazado can be used as a past participle in perfect tenses, as in: "Javier ha embarazado a María." Source: Internet
English has an active participle, also called a present participle; and a passive participle, also called a past participle. Source: Internet
For verbs that had -ěti in their infinitive, the past participle ending -ěl evolved into -io in Ijekavian Neoštokavian. Source: Internet