preached
No, it is not. It is the past tense and past participle of the verb to giggle. It can be a verb form, a participial, or an adjective (e.g. giggled replies).
A participial adjective is a present or past participle that is used to modify a noun.
It can be (rejected applications, rejected shot). It is the past participle of the verb (to reject), and may also be a verb form or participial.
It can be (finished wood, a finished task). It is the past tense and past participle of the verb (to finish, with at least two meanings) and may be a verb form, participial, or adjective.
As is so often the case - that depends. Committed as a past participle would take the participial form: we were committed to working... But as a preterite, it would take the infinitive: We committed to work collaboratively.
Preach is a regular verb so the past participle is preached
No. It is the past tense and past participle of include. It can form a participial phrase but it is not a preposition.
The past participle is preached.
No, it is not. Frustrated is the past tense and past participle of the verb (to frustrate) and may be a verb form, participial, or adjective.
No, it is not. It is the past tense and past participle of the verb to purchase. It can be a verb form, a participial, or an adjective (bought, paid for).
No, it is not. It is the past tense and past participle of the verb to insert. It can be a verb form, a participial, or an adjective (e.g. inserted edits).
No. Wished is a past tense verb, and a past participle(to wish). But it could form a participial phrase to function as an adverb.
No, it is not. It is the past tense and past participle of the verb to giggle. It can be a verb form, a participial, or an adjective (e.g. giggled replies).
No, it is not. It is the past tense and past participle of the verb to say. It can be a verb form, a participial, or an adjective (e.g. things said).
No, it is not. It is the past tense and past participle of the verb to inspect. It can be a verb form, a participial, or an adjective (e.g. inspected beef).
Yes, it can be (chiefly, epithelialized wounds). It is a past tense and past participle (to epithelialize) and may be a verb form, a participial, or an adjective.
No, it is not an adverb. It is a past tense and past participle. It can form participial phrases that are adjectives (e.g. the train operated by a freight company)