Non Manual Features (NMF) are a linguistic tool used in British Sign Language to adapt a sign, using your facial expression and body movement.
For example, the sign for rain can be modified using NMF, to describe how heavy or light the rain is falling.
NMF are used frequently in BSL and often used in place of the English words, ‘very’ or, ‘lots of’ or, ‘too’. It can also be used to show speed.
There are 94 NMF examples in this course.