What's the difference between i.e. and e.g.?
c.1790, "insane;" of things, "out of order," from 1796; past participle adjective from derange (v.).
1776, "throw into confusion," from French déranger, from Old French desrengier "disarrange, throw into disorder," from des- "do the opposite of" (see dis-) + Old French rengier (Modern French ranger) "to put into line," from reng "line, row," from a Germanic source (see rank (n.)). Mental sense first recorded c.1790.