Her big brother always bullied her when she was young.
source: WordNet 3.0
discourage or frighten with threats or a domineering manner; intimidate
source: WordNet 3.0
To depress or bear down with haughty, stern looks, or with arrogant speech and dogmatic assertions; to abash or disconcert by impudent or abusive words or looks; to bully; as, to browbeat witnesses.