unattainably
un·at·tain·a·ble
U0025000 (ŭn′ə-tā′nə-bəl)unattainably
(ˌʌnəˈteɪnəblɪ)| Adv. | 1. |  unattainably - in an unattainable manner or to an unattainable degree; "this house is unattainably expensive" |
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