Synonyms and related words :
adamant, adamantine, at a standstill, closed to, firm, frozen, immobile, immotile, immotive, immovable, impersuadable, impersuasible, impervious, inflexible, irremovable, obstinate, pat, rigid, standpat, stationary, unamenable, unimpressionable, uninfluenceable, unmoving, unpersuadable, unpliable, unreceptive, unresponsive, unsuggestible, unsusceptible, unswayable, unyielding