ADJ

clear, fundamental, grave, serious
deliberate, flagrant
He refused to bow to the Queen, in deliberate breach of etiquette
minor
security

VERB + BREACH

constitute
Such behaviour constitutes a breach of confidentiality
commit

PREP

in ~ of
The court's decision is in breach of the European Convention on human rights
~ of
a minor breach of discipline

PHRASES

a breach of confidence/trust, a breach of confidentiality/contract
He was sued for breach of contract
a breach of security, a breach of the peace

VERB + BREACH

cause, lead to
heal, repair

PREP

~ between
What caused the breach between the two brothers?
~ with
She left home following the breach with her family