Stress timed A stress-timed language is a language where the stressed syllables are said at approximately regular intervals, and unstressed syllables shorten to fit this rhythm.
Sub-skills The language skills of speaking, listening, writing and reading are often divided into sub-skills.
Subordinate clause A subordinate - or dependent - clause is a clause which adds more information to a sentence but is incomplete and not a sentence on its own.
Summative assessment Summative assessment evaluates a learner's progress up to that point and provides a summary of where they are.