festere w języku angielskim

firmer▼◼◼◼[UK: ˈfɜː.mə(r)] [US: ˈfɝː.mər]

more fireproof▼

more stalwart▼

sounder▼[UK: ˈsaʊnd.ə(r)] [US: ˈsaʊnd.ər]

harder drinking▼

more tropicalized▼

more weatherproof▼