miz·zle 1 
(mĭzəl)
(mĭzəl)intr.v. miz·zled, miz·zling, miz·zles
To rain in fine, mistlike droplets; drizzle.
n.
A mistlike rain; a drizzle.
[Middle English misellen; probably akin to Dutch dialectal mieselen; see meigh- in the Appendix of Indo-European roots.]
mizzly adv.