Superfluous: more than enough, excessive.
As I have already answered your question several times, to answer again would be superfluous.
Vindicate: To clear of doubt or suspicion.
As he is innocent, I believe he will be vindicated in court.
Cantankerous: Bad-tempered/ cranky.
As she got older she became more cantankerous.
Cacophony: An unpleasant mixture of sounds.
The cacophony in the classroom could be heard from the corridor.
Benevolent: Friendly, generous, helpful
He was a benevolent ruler and his subjects respected him for it.
Effervescence: Full of life and excitement.
She was brimming with effervescence- everyone loved her.
Taciturn: Reserved or uncommunicative in speech.
He was a taciturn man who was unused to displays of emotion.
Ingratiate: Bring oneself into good graces or favour of another.
He tried so hard to ingratiate himself with his English teacher with good behaviour and excellent homework.