transitive verb
1.
a.
(1) : to reduce the estimated value of : depreciate
the $50,000,000 item of “Good Will” … had been written off to a nominal $1 — Woolworth's First 75 Years
(2) : to take off the books : cancel
write off uncollectibles
b. : to derogate or deny the worth of : regard or concede to be lost, outmoded, exhausted, outworn, destroyed, or useless
the lighter, translucent style was more or less written off — Israel Citkowitz
writing its mission off as a complete failure — Current History
c. : destroy , kill , end
written off a pretty shabby kind of life by getting himself killed — Angus Mowat
2. : to write fluently, rapidly, or without hesitation
set to work to learn what he had written off by heart — Nevil Shute