2.1.2. Simultaneous derivation
Simultaneous derivational processes consist in the modification of one or more formational parameters of the stem (i.e. the manual sign) to derive a new lexeme with a specific meaning. For instance, in LIS some agentive nouns differ from the corresponding verb only in few phonological features, such as the articulation or the occurrence of specific non-manual markers or mouthings. To illustrate, consider the pair below. The verb teach and the agentive noun teacher, despite being very similar, differ in the point of contact between the two articulators: the wrist for the verb (a), and the forearm/elbow for the noun (b).
a. teach
b. teacher
Further strategies of simultaneous derivation are illustrated in the next sections.
