Intelligibility (Verständlichkeit, comprehensibility, understandability), 4, 59, 65 + fn, 81, 86, 93fh, 100 + fn, 105, 151-153, 161-165, 168-169, 209, 220, 271, 324, 335-336, 366, 368, 369, 405, 410, 412; average, 168; as horizon of being, 100, 231, 234 + fn. 426 (is temporality); unintelligibility, 4, 153, 164, 220, 236; to be, become, or make intelligible, 18, 44, (comprehensible), 65, 90, 99, 172, 181, 227, 231, 234, 245, 276, 279, 281, 290, 328, 349, 426. See also explanation; understanding (BT)