Synonyms of unavailable

1 Syllable
out, off
2 Syllables
busiest, married, taken, fruitless, busier, busy, peopled, scrapper
3 Syllables
lived-in, useless, slack-spined
4 Syllables
inutile, unusable, unreachable, ungettable, non-existent, nonexistent, nonfunctional, unusuable, unfunctional
5 Syllables
inapproachable, unaccessible, ineffective, unattainable, inaccessible, unachievable, unobtainable, ineligible