uncustomed adjective2 •Not subject to customs duties; uncustomable. •(no longer used) On which no customs duties have been paid.[…] with them came a great numbre of rascal & pedlers, & Iuellers, and brought ouer hattes and cappes, and diuerse merchaundise vncustomed, all vnder the coloure of the trussery of the Ambassadours. — 1548