below par
Also, under par. Not up to the average, normal, or desired standard. For example, I am feeling below par today, but I'm sure I'll recover by tomorrow. This term employs par in the sense of “an average amount or quality,” a usage dating from the late 1700s.
Words nearby below par
belostok,
belote,
beloved,
belovo,
below,
below par,
below stairs,
below the belt, hit,
below the line,
below-the-line,
belowdecks