unavailable
adj.
1540s, "ineffectual," from un-(1) "not" + available. Meaning "incapable of being used" is recorded from 1855. Unavailing has taken up the older sense of the word.
| 词汇 | unavailable |
| 词根词缀 | Online Etymology Dictionary unavailable adj. 1540s, "ineffectual," from un-(1) "not" + available. Meaning "incapable of being used" is recorded from 1855. Unavailing has taken up the older sense of the word. |
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