A complement clause is a clause that is an argument.
- "In many languages, certain verbs—notably 'see', 'hear', 'know', 'believe', 'like', and often also 'tell' and 'want'—can take a clause, instead of an NP (noun phrase), as a core argument. This is called a complement clause." (Dixon 2006:1)
- sentential complement
- clausal complement
- noun clause
- completive clause
- predicate actant (recent Russian usage (predikatnyj aktant), cf. Xrakovskij (ed.) 1985).
- content clause (widespread older usage in German (Inhaltssatz)).
This usage has its origin in generative grammar of the 1960s (cf. Rosenbaum 1967, who used the term predicate complement.)
- Dixon, R.M.W. 2006. Complement clauses and complementation strategies in typological perspective. In: Dixon, R.M.W. & Aikhenvald, Alexandra Y. (eds.) 2006. Complementation: a cross-linguistic typology. Oxford: Oxford University Press, 1-48.
- Rosenbaum, Peter S. 1967. The grammar of English predicate complement constructions. Cambridge, MA: MIT Press.
- Xrakovskij (ed.) 1985. ...
- German Komplementsatz