adv. [f. prec.]
1. Interchangeably, as equivalents, synonymously.
1710. Berkeley, Princ. Hum. Knowl., I. § 142. I will not say that the terms idea and notion may not be used convertibly.
1835. I. Taylor, Spir. Despot., iv. 164. These terms are used convertibly throughout the New Testament.
† 2. By conversion, conversely. Obs.
a. 1726. South, Serm., I. ii. (R.). There neither is, nor ever was any person remarkably ungrateful, who was not also unsufferably proud; nor convertibly, any one proud, who was not equally ungrateful.
