hɑːd hɑɹd ɪnˈvaɪələbl̩ ˈpəʊt(ə)nt ˈpoʊt(ə)nt səˈkjʊə(ɹ) səˈkjʊɹ ˈsɑlɪd ˈsɒlɪd stɪf stɹɒŋ stɹɔŋ stɹɑŋ

səbˈstænʃəl ˌʌnəˈseɪləbl̩ strong and sure a firm grasp gave a strong pull on the rope freshly made or left a warm trail the scent is warm being distilled rather than fermented; having a high alcoholic content hard liquor not faint or feeble a strong odor of burning rubber having a strong physiological or chemical effect a potent toxin potent liquor a potent cup of tea a stiff drink having or wielding force or authority providing the ground soldier with increasingly potent weapons of verbs not having standard (or regular) inflection ‘sing’ is a strong verb of good quality and condition; solidly built a solid foundation several substantial timber buildings having strength or power greater than average or expected a strong radio signal strong medicine a strong man immune to attack; incapable of being tampered with an impregnable fortress fortifications that made the frontier inviolable a secure telephone connection