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Webster 1913 Edition

Indefatigable

Inˊde-fat′i-ga-ble

(ĭnˊdē̍-făt′ĭ-gȧ-b’l)
,
Adj.
[L.
indefatigabilis
: cf. OF.
indefatigable
. See
In-
not, and
Defatigable
, and cf.
Infatigable
.]
Incapable of being fatigued; not readily exhausted; unremitting in labor or effort; untiring; unwearying; not yielding to fatigue;
as,
indefatigable
exertions, perseverance, application
.
“A constant, indefatigable attendance.”
South.
Syn. – Unwearied; untiring; persevering; persistent.

Webster 1828 Edition

Indefatigable

INDEFAT'IGABLE

,
Adj.
[L. indefatigabilis; in and defatigo, fatigo, to fatigue.] Unwearied; not tired; not exhausted by labor; not yielding to fatigue; as indefatigable exertions; indefatigable attendance or perseverance.
Upborne with indefatigable wings.

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