ad. Near in time, place, or relationship: Evening draws nigh. ad. Nearly; almost: talked for nigh onto two hours. adj. Being near in time, place, or relationship; close. See Synonyms at close.adj. Being on the left side of an animal or vehicle: pulling hard on the nigh rein. adj. Being the animal or vehicle on the left: the nigh horse. preposition. Not far from; near.v. To come near to or draw near.