Etymology From Middle English needely, neodliche, from Old English nēodlīċe (“eagerly, earnestly, carefully, zealously, diligently, sedulously; greatly”); equivalent to need (“desire”) + -ly. Cognate with Old Saxon niudlīko (“zealously, carefully”), German niedlich (“desirable, appealing, lovely, cute”).
Etymology From Middle English needely, nedelich, from Old English *nīedlīċe (“necessarily”), from nīedlīc (“necessary”); equivalent to need (“necessity, need”) + -ly. Merged with Etymology 1 above. Cognate with Middle Dutch nodelike, Middle Low German nōtliken, Middle High German nōtliche.
Or if sower woe delights in fellowship, And needly will be rankt with other griefesc. 1591–1595 (date written), William Shakespeare, “The Tragedie of Romeo and Ivliet”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene ii]: