When silence is used for long periods eg "Any objection, raising of the voice, disapproval, disagreeing…anything- led to silence" then it isnt always from bullying.
I am silent to my mother due to her abuse of us three kids. Im silent for defence purposes not passive aggressiveness, revenge etc.
So indeed there are examples of using silence as justification. Absolutely but in 2500 characters it isnt always possible to list them, its subjective depending on the story. Your story is such a story of justification (my brother bullied me)
When a couple marries, communication is vital. If a spouse goes silent and wont even tell you what you've done wrong thats tormenting. "Did I forget to buy the bread, the nappies or hung out the clothes wrong"? Days go by, no answer. Two weeks, finally "yes you washed the colours with the whites". OMG! So punished over something I'm unaware of. That fuels more hurt when one has an eager spouse to please her.
That is using silence as a tool not as a defence.
Your attitude towards your sisters is justified and their attitude is dismissive as it suit them to be so. But I wouldnt dismiss all mechanics like the one that ripped me off. I.e in your post in your thread "I wont take that chance". We'll disagree agreeably.
Feel free to google
Topic: so what are their mental illnesses- beyondblue
So, to me it is clearer now, and its a good topic, that silence can be used for several reasons, some justified for toxic behaviours (bullying) or personal recovery from trauma. Sometimes less justified when used as punishment for misdemeanors not under the umbrella of abuse. And never imo acceptable when used as "tool of torment". My views..
The latter, tools of torment are another form of bullying no better, no worse.