If your neighbors make you sick, you might consider taking an antidote, a medical remedy that counteracts a poison. refutable refutation refutations regardless regency regenerate regenerated regenerates regeneration regenerations regenerative regent regents reggae regicide regime regimen regimens regiment regimental regimentation regimented regiments regimes regina reginas region regional regionalisation regionalism regionally regions register registered registering registers registrable registrar registrars registration registrations registries registry regrading regress regressed regresses regressing regression regressions regressive regret regretful regretfully regrets regrettable regrettably regretted regretting regroup regrouped regrouping regrow regrowth regular regularisation regularise regularised regularities regularity regularly regulars regulate regulated regulates regulating regulation regulations regulative regulator regulators regulatory regurgitate regurgitated regurgitating regurgitation rehabilitate rehabilitated rehabilitating rehabilitation rehash rehashed rehashes rehashing reheard rehearing rehears