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indefatigability (n.)
1630s, from indefatigable + -ity. Indefatigableness is from 1650s; indefatigation from 1640s.
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Definitions of indefatigability from WordNet
Dictionary entries near indefatigability
indecisive
indeclinable
indecorous
indecorum
indeed
indefatigability
indefatigable
indefeasible
indefensible
indefinability
indefinable