MONTHLYa.
Continued a month or performed in a month; as the monthly revolution of the moon.
1. Done or happening once a month, or every month; as the monthly concert of prayer; a monthly visit.
MONTHLYadv.
Once a month; in every month. The moon changes monthly.
1. As if under the influence of the moon; in the manner of a lunatic. [Not used.]