verb (used with object) Archaic.
to modify or moderate by mixing or blending with something different or opposite.
to regulate or modify the temperature of.
to soothe; mollify; mitigate.
to accommodate; adapt (usually followed by to ).
Origin: 1325–75; Middle English attemperen Related forms
< Latin attemperāre
to adjust (see at-
); replacing Middle English attempren
< Middle French attemprer