However, some creative options could be:
* A pack of liars (evoking a sense of wolves or dogs)
* A web of liars (referencing the tangled nature of deceit)
* A chorus of liars (suggesting a group speaking in unison, perhaps with false promises)
* A conspiracy of liars (emphasizing the collaborative nature of deceit)
Ultimately, the best collective noun for liars depends on the specific context and desired tone.