inconceivable

in·con·ceiv·a·ble
UK: /ɪnkənsˈiːvəbə‍l/   US: /ˌɪnkənˈsivəbəɫ/
lýsingarorð
  • óskiljanlegur, óhugsanlegur (a velocity that is truly inconceivable)

Samheiti: impossible, out of the question, unimaginable