Antilepton
An antilepton is an antimatter counterpart of a lepton. Antileptons could interfere with subspace communications.

In 2369, Gul Jasad flooded subspace with antilepton interference near Deep Space 9 in order to halt its subspace communications with Starfleet while he was attempting to gain answers to his questions about the sudden disappearance of Gul Dukat's warship. ()

In 2399, former Tal Shiar operative Laris speculated Zhat Vash operatives had saturated Dahj Asha's apartment with antileptons in order to remove any trace of their presence; this had the effect of overwriting the particle residuum and inhibiting her attempts at forensic molecular reconstruction in a barely detectable way that otherwise would have been perceived as instrument failure. The act of performing this saturation would have been at no small risk to the perpetrators themselves. ()

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