maximal

/ˈmæksəməl/

Maximal means the greatest, best, or largest amount of something. The maximal speed of your friend's junky car might be forty miles per hour.

The adjective maximal is the opposite of the more common minimal. Your idea of sleeping in maximal comfort might include a soft comforter and lots of pillows, and you might try, when you're running on a treadmill, to get your heartbeat to its maximal rate for several minutes. Maximal has a Latin root, maximus, or "greatest," which in turn comes from magnus, "great or large."

Definitions of maximal

1. adjective

   the greatest or most complete or best possible
   “maximal expansion”

   synonyms: maximum

   supreme

   greatest or maximal in degree; extreme

   antonyms:

   minimal

   the least possible

   borderline, marginal

   of questionable or minimal quality

   negligible

   so small as to be meaningless; insignificant

   nominal, token, tokenish

   insignificantly small; a matter of form only (`tokenish' is informal)

   stripped, stripped-down

   having only essential or minimal features