tacit
Concise Oxford English Dictionary © 2008 Oxford University Press:
tacit /ˈtasɪt/
▶adjective understood or implied without being stated.
– derivatives
tacitly adverb.
tacitly adverb.
– origin C17 (in the sense ‘wordless, noiseless’): from L. tacitus ‘silent’, from tacere ‘be silent’.
'tacit' also found in these Oxford entries:

