stichhaltig w języku angielskim

valid▼◼◼◼adjective
[UK: ˈvæ.lɪd] [US: ˈvæ.ləd]

sound [sounder, soundest]▼◼◼◻adjective
[UK: ˈsaʊnd] [US: ˈsaʊnd]

soundness validity▼noun