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The Collaborative International Dictionary of English v.0.48 (gcide)

Undertake \Un`der*take"\, v. t. [imp. {Undertook}; p. p.
{Undertaken}; p. pr. & vb. n. {Undertaking}.] [Under take.]
1. To take upon one's self; to engage in; to enter upon; to
take in hand; to begin to perform; to set about; to
attempt.
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To second, or oppose, or undertake
The perilous attempt. --Milton.
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2. Specifically, to take upon one's self solemnly or
expressly; to lay one's self under obligation, or to enter
into stipulations, to perform or to execute; to covenant;
to contract.
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I 'll undertake to land them on our coast. --Shak.
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3. Hence, to guarantee; to promise; to affirm.
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And he was not right fat, I undertake. --Dryden.
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And those two counties I will undertake
Your grace shall well and quietly enjoiy. --Shak.
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I dare undertake they will not lose their labor.
--Woodward.
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4. To assume, as a character. [Obs.] --Shak.
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5. To engage with; to attack. [Obs.]
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It is not fit your lordship should undertake every
companion that you give offense to. --Shak.
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6. To have knowledge of; to hear. [Obs.] --Spenser.
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7. To take or have the charge of. [Obs.] "Who undertakes you
to your end." --Shak.
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Keep well those that ye undertake. --Chaucer.
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