ability to interact appropriately with others by knowing what to say, to whom, when, where, and how
the speaker's ability to put language to communicative use, usually traced back to Hymes. See pragmatic competence
A speaker’s ability to effectively communicate an intentional message so as to alter the listener’s attitudes, beliefs, and/or behaviors. A very young child can thereby be communicatively competent with a minimal development of linguistic skills” (Nicolosi, Harryman, & Kresheck, p. 62).
The ability to functionally communicate within the natural environment and to adequately meet daily communication needs.
The ability of a person to coordinate all aspects of the communication system adequately to meet all communicative needs and requirements.
ability to function in a communicative setting - that is to produce and understand what is appropriate to say, how it should be said, and when it should be said.
Communicative competence is a linguistic term which refers to a learner's L2 ability. It not only refers to a learner's ability to apply and use grammatical rules, but also to form correct utterances, and know how to use these utterances appropriately. The term unlies the view of language learning implicit in the communicative approach to language teaching.