Sneaky, stealthy, or passive aggression. Perception of a sneaky action or intention, possibly with an element of sneaky attack.
Dream dictionary: aky dream meanings
The weasel in dreams indicate the mischievous and devious parts of your personality. Perhaps you are a very sneaky person and not nice to those around you. The dream suggests to change this about yourself. The weasel could also indicate someone in your waking life that has the features of the weasel and you should be careful while being with this person.
…Dreaming of carrying an umbrella, denotes that trouble and annoyances will beset you. To see others carrying them, foretells that you will be appealed to for aid by charity. To borrow one, you will have a misunderstanding, perhaps, with a warm friend. To lend one, portends injury from false friends. To lose one, denotes trouble with some one who holds your confidence. To see one torn to pieces, or broken, foretells that you will be misrepresented and maligned. To carry a leaky one, denotes that pain and displeasure will be felt by you towards your sweetheart or companions. To carry a new umbrella over you in a clear shower, or sunshine, omens exquisite pleasure and prosperity….
…If they are alive and sneaky, an opportunity we did not count on will present to us. If they’re out of water or dead, it indicates that we have not taken advantage of opportunities….