"fact or process of reabsorption, retrogressive absorption," 1670s, noun of action from resorb.
"inside information," 1883, in in the know, from know (v.) Earlier it meant "knowledge, fact of knowing" (1590s).
"act or fact of being given fresh life and vigor, act of revitalizing," 1869, noun of action from revitalize.
"act, fact, or process of making pretty," 1902, noun of action from prettify (q.v.).
"act or fact of being reduced to a lower rank or class," 1890, noun of action from demote (v.).
1823 "act or fact of memorializing;" 1857 as "action of committing to memory;" noun of action from memorize (v.).
"act of making dark or obscure; fact of being overclouded," c. 1600, noun of action from obnubilate (v.).