be very cautious, take every precaution, look before one leaps

a promise breaker, one who goes back on his/her words

breach, infringement, contravention, violation (of law, etc)

hostile witness

act against or violate rule or law, oppose

averse (to)

act against the state

false copy

against good manners, out of etiquette

in the case of breach

in opposition to, contrary to, on the contrary

think otherwise, regard as one's opponent

misrepresent, make a false or contradictory statement, contradict, oppose

to be opposed (to), to be against

to cross the own limits, the put steps out from limits, to exploit

to plant the foot firmly (on), to establish or secure (one's) footing