a. (UN-1 7.)

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1709.  Rowe, Shakspere’s Cymb., I. vii. 127. An Eye, Base and unlustrious [sic; 1623 illustrious] as the smoaky Light That’s fed with stinking Tallow.

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1790.  Anna Seward, Lett. (1811), II. 378. How dim and unlustrous is Mr. Merry’s muse!

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1863.  W. Lancaster, Præterita, 70. Sweet unlustrous eyes.

4