usability is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

Meanings

Noun (COUNTABLE AND UNCOUNTABLE)

The state or condition of being usable.
The degree to which an object, device, software application, etc. is easy to use with no specific training.

usability is a Scrabble valid word

u1s1a1b3i1l1i1t1y4

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 14 points

usability is an iScramble, QuickWords valid word

u1s2a3b4i5l6i7t8y9

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 45 points

Same letters words (Anagrams)

• SUABILITY

Same letters plus one

• SUBABILITY
• SUEABILITY
• USEABILITY

Same letters minus one

• SUITABLY