regardful, a. [mindful], [heedful], [attentive], observant.
regardless, a. heedless, [careless], [unmindful], [inattentive], [indifferent].
regards, n. pl. compliments, [respects].
region, n. [district], quarter, locality, [neighborhood], [vicinity].
register, n. [list], [roll], [schedule], roster; registrar, [recorder].
register, v. [record], [enroll], matriculate.
registration, n. registry, [enrollment], matriculation.
regret, n. [sorrow], [compunction], deprecation, [rue].
regret, v. [deplore], be sorry for, [rue], deprecate.
regular, a. [formal], [normal], conventional, [systematic]: [steady], [uniform], [methodical], [constant]; (Colloq.) unmitigated, [thorough], out-and-out.