To take or assume responsibility; to take upon oneself; an archaic form meaning to undertake or engage with.
From Middle English, combining 'enter-' (prefix meaning to go into) and 'take.' This Old English construction parallels similar verbs like 'undertake,' evolving as a less common variant.
This is basically the forgotten cousin of 'undertake'—medieval writers used it, but English speakers gradually preferred 'undertake' instead, so it faded from everyday speech!
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