There could be emotional or verbal abuse that leaves no visible scars on the outside, but plenty on the inside.
Witnessed is a verb
I witnessed a murder.
Offers do not need to be witnessed or notarized.
Words that you can use other than witnessed are seen, observed, watched, viewed, and noticed. These are synonyms of witnessed.
I have witnessed no levitation, ever.
The simple past tense of "witness" is "witnessed."
The past participle is witnessed.
We do not know much about the day-to-day relationship between Noah and his sons at all. The only incident we know of is that after the flood, Noah's son Ham witnessed his father naked and intoxicated, resulting in Noah cursing Ham's son for eternity.
The disciples witnessed Jesus' sinlessness, His miracle's, His compassion, His love for the Father in heaven and His love of human beings. Some witnessed His death on the cross and His burial and all witnessed His life after rising from the dead, and they witnessed His ascension into heaven.
Observed
Massive black hole has been witnessed at Antarctica. It is due to the low temperature there.
Ashoka converted to Buddhism out of remorse for his conquest of the Kalingas. He witnessed a lot of bloodshed and cruelty so he wanted a peace of mind. Buddhism teaches love, peace, and tolerance.