Etymology
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invigorate (v.)
1640s, from in- (2) + vigor (n.) + -ate (2). Earlier verb was envigor (1610s), from Old French envigorer. Related: Invigorated; invigorating.
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invigorating (adj.)
1690s, adjective from present participle of invigorate. Related: Invigoratingly.
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reinvigorate (v.)

also re-invigorate, "revive vigor in, reanimate," 1650s, from re- "back, again" + invigorate (v.). Related: Reinvigorated; reinvigorating; reinvigoration.

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invigoration (n.)
1660s, noun of action from invigorate. Perhaps modeled on French invigoration.
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corroboration (n.)

mid-15c., corroboracioun, "act of strengthening, support" (a sense now obsolete), from Late Latin corroborationem (nominative corroboratio), noun of action from past-participle stem of Latin corroborare "to strengthen, invigorate," from assimilated form of com "with, together," here perhaps "thoroughly" (see com-) + roborare "to make strong," from robur, robus "strength," (see robust). Meaning "act of confirming, verification, confirmation" is attested by 1768.

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corroborate (v.)

1520s, "to give (legal) confirmation to," from Latin corroboratus, past participle of corroborare "to strengthen, invigorate," from assimilated form of com "with, together," here perhaps "thoroughly" (see com-) + roborare "to make strong," from robur, robus "strength," (see robust).

Meaning "to strengthen by evidence, to confirm" is from 1706. Sometimes 16c.-18c. in its literal Latin sense "make strong or add strength to," especially of medicines. Related: Corroborated; corroborating; corroborative.

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recreation (n.)

late 14c., recreacioun, "refreshment or curing of a person, refreshment by eating," from Old French recreacion (13c.), from Latin recreationem (nominative recreatio) "recovery from illness," noun of action from past participle stem of recreare "to refresh, restore, make anew, revive, invigorate," from re- "again" (see re-) + creare "create" (from PIE root *ker- (2) "to grow"). Meaning "refresh oneself by some amusement" is first recorded c. 1400.

A verb recreate "to refresh by physical influence after exertion" is attested from 15c. and was used by Lyly, Pope, Steele, and Harriet Martineau, but it did not take, probably to avoid confusion to the eye with the recreate (re-create) that means "create anew." Hence also recreation (re-creation) "a new creationm regeneration" (early 15c.); "act of creating anew" (1520s).

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