Princeton's WordNet

1. useable, usable(adj)

   capable of being put to use

   "usable byproducts"

2. functional, usable, useable, operable, operational(adj)

   fit or ready for use or service

   "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order"

3. available, usable, useable(adj)

   convenient for use or disposal

   "the house is available after July 1"; "2000 square feet of usable office space"

Wiktionary

1. usable(Adjective)

   capable of being used

Origin: From usable, from verb user "to use".

Webster Dictionary

1. Usable(adj)

   capable of being used

• bruikbaarAfrikaans
• قابِل للإسْتِعْمالArabic
• използваемBulgarian
• utilizávelPortuguese (BR)
• použitelnýCzech
• brauchbarGerman
• brugbarDanish
• χρησιμοποιήσιμοςGreek
• utilizable, aprovechableSpanish
• kasutamiskõlblikEstonian
• قابل استعمالFarsi
• käyttökelpoinenFinnish
• utilisableFrench
• שִמוּשִיHebrew
• उपयोगीHindi
• iskoristivCroatian
• (fel)használhatóHungarian
• bisa dipakaiIndonesian
• nothæfurIcelandic
• utilizzabileItalian
• 使用可能なJapanese
• 사용하기 좋은Korean
• tinkamas naudotiLithuanian
• lietojamsLatvian
• boleh digunakanMalay
• bruikbaarDutch
• anvendelig, brukbarNorwegian
• nadający się do użytkuPolish
• قابل استعمالPersian
• دپكار يدو، دكار، داستعمال وړ، په كار راتلونىPashto
• utilizávelPortuguese
• utilizabilRomanian
• (при)годныйRussian
• použiteľnýSlovak
• uporabenSlovenian
• upotrebljivSerbian
• användbar, brukbarSwedish
• ซึ่งใช้ได้Thai
• kullanılabilirTurkish
• 可用的Chinese (Trad.)
• придатний для вживання; практичнийUkrainian
• قابل استعمالUrdu
• có thể sử dụng đượcVietnamese
• 可用的Chinese (Simp.)