Pressure sensitive adhesive compositions are described comprising polymerized units derived from alkyl (meth)acrylate monomer(s) and a crosslinking monomer comprising at least two terminal groups selected from allyl, methallyl, or combinations thereof. In one embodiment, the pressure sensitive adhesive composition is a syrup or the reaction product of a syrup comprising i) a free-radically polymerizable solvent monomer; and ii) a solute (meth)acrylic polymer The syrup or the (meth)acrylic solute polymer comprises polymerized units derived from the cross-linking monomer. Also described are pressure sensitive adhesive articles and methods.