indefatigably

副词 adv.
中文释义
美 /ˌɪndəˈfætəɡəbli/

英文释义

副词 adv.
  1. In an extremely persistent and untiring manner; in an indefatigable manner
    — Silence, silence,’ the trumpet mouths indefatigably repeated at intervals down every corridor.

词形变化

more indefatigably comparative most indefatigably superlative

词源

From indefatigable + -ly, but indefatigable itself was attested later. In use since the 16th century.
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