The quality or state of being deliberate, thoughtful, and done with careful consideration; intentionality combined with awareness.
From advised (past participle of advise) plus the noun-forming suffix -ness. The word captures the idea that an action was done deliberately after proper thought or counsel.
The phrase 'with full advisedness' appears in legal documents and formal speech to indicate someone was aware of what they were doing—it's about establishing that decisions were made with full consciousness, not by accident.
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