There are many words use to label 'energies that does not synchronize with us'.
Usual terms are
i) negative energies, which simply means it's negative charged againts your energies. Nothing bad or good about that.
ii) lower/ dampen energies, again it's just different from yours. But nothing bad or good about it.
iii) and etc
It's just words we use simply to mean it does not synchronize with us. Whichever it is, one of the best way is to recycle the energy, why waste when we can make it into beneficial elements.
Each time there are energies of such, simple set your intention to transform/transmute/ transcent the energies to abundance of love & light, joy & peace and etc that is beneficial which may not be interpreted in our vocabulary.
You may do that to access energies as well.
