Pacific's rhymes with:
specifics, hieroglyphics, scientific's, scientifics, specifics, affix, alphagraphics, chemfix, datagraphix, demographics, geographic's, graphics, graphics', hieroglyphics, micrographics, prefix, reprographics, scientific's, scientifics, specifics, suffix, summagraphics, traffic's
Pacific's sounds like:
pacific, pacifica, pacifico, pago_pago, passbook, passbooks, paysops, pickups, piggyback, poughkeepsie, poughkeepsie's, push-ups, pushups