καὶ τὸ σιγᾶν πολλάκις ἐστὶ σοφώτατον ἀνθρώπῳ νοῆσαι → and silence is often the wisest thing for a man to heed, and often is man's best wisdom to be silent, and often keeping silent is the wisest thing for a man to heed
unworthy of: P. and V. ἀνάξιος (gen.); see worthless.
base: P. and V. πονηρός; use base.
incompetent: P. and V. φαῦλος.