τὸν ἴδιον κίνδυνον ὑποθείς → at his own risk
P. and V. λεπτός, μικρός, σμικρός, ὀλίγος, φαῦλος, βραχύς, ἀσθενής, Ar. and V. βαιός; see trifling.
not worth speaking of: P. οὐκ ἄξιος λόγου.
frivolous: P. ληρώδης.
trivial, s. abgeschmackt.