impervious to pleas, persuasion, requests, reason; "he is adamant in his refusal to change his mind"; "Cynthia was inexorable; she would have none of him"- W.Churchill; "an intransigent conservative opposed to every liberal tendency"
having a play of lustrous rainbow-like colors; "an iridescent oil slick"; "nacreous (or pearlescent) clouds looking like mother-of-pearl"; "a milky opalescent (or opaline) luster"
United States diplomat who did the groundwork for creating the United Nations (1871-1955)
United States naval officer who commanded the `Constitution' during the War of 1812 and won a series of brilliant victories against the British (1773-1843)
persistent enlarged calyx at base of e.g. a strawberry or raspberry
guided by practical experience and observation rather than theory; "a hardheaded appraisal of our position"; "a hard-nosed labor leader"; "completely practical in his approach to business"; "not ideology but pragmatic politics"
unreasonably rigid in the face of argument or entreaty or attack
address with continuously or persistently, as if with a barrage; "The speaker was barraged by an angry audience"; "The governor was bombarded with requests to grant a pardon to the convicted killer"
throw bombs at or attack with bombs; "The Americans bombed Dresden"
inspiring fear; "the formidable prospect of major surgery"; "a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic"- G.H.Johnston; "something unnerving and prisonlike about high grey wall"
extremely impressive in strength or excellence; "a formidable opponent"; "the challenge was formidable"; "had a formidable array of compositions to his credit"; "the formidable army of brains at the Prime Minister's disposal"