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
The past participle form of "preach" is "preached." For example, "He has preached at that church for many years."
Sang or Sung.
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. 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 inspect. It can be a verb form, a participial, or an adjective (e.g. inspected beef).
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, 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. Wished is a past tense verb, and a past participle(to wish). But it could form a participial phrase to function as an adverb.
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)
Stayed.