stain (v.) 2
eclipse, belittle, put in the shade
AC III.iv.27 [Antony to Octavia] I'll raise the preparation of a war / Shall stain your brother
R2 III.iii.66 [Bolingbroke to all, of King Richard as the sun] the envious clouds are bent / To dim his glory and to stain the track / Of his bright passage to the occident
Tim I.i.16 [Poet reciting to himself] It stains the glory in that happy verse