2. deport {verb} {archaic} = Conduct oneself in a specified manner:
deport (v.1): late 15c., "to behave," from Old French deporter "behave, deport (oneself)" (12c.), also with a wide range of meanings in Old French, such as "be patient; take one's (sexual) pleasure with; amuse, entertain; remain, delay, tarry; cheer, console, treat kindly; put aside, cast off, send away," from de- "from, off" (see de-) + porter "to carry," from Latin portare "to carry" (see port (n.1)).
OED discusses only the other definition of 'deport', as in expulsion; so I don't excerpt it here. I wish to dig deeper than the definition, which I already understand and so ask NOT about. I heed the Etymological Fallacy. What are some right ways of interpreting the etymology so that it feels reasonable and intuitive?
How does "from, off" combine with "to carry" to mean the above?