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practicable▼(serving a useful function; functional or handy)adjective[UK: ˈpræk.tɪk.əb.l̩] [US: ˈpræk.tək.əb.l̩]
usable▼(capable of being used)adjective[UK: ˈjuː.zəb.l̩] [US: ˈjuː.zəb.l̩]
usability▼(degree to which an object or device is easy to use)noun[UK: ˌjuːzəˈbɪlɪti ] [US: ˌjuzəˈbɪlɪti ]
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