γέλως ἄκαιρος κλαυμάτων παραίτιος → ill-timed laughter causes tears (Menander)
P. and V. ὀξύς.
ready: P. and V. ἑτοῖμος.
zealous: P. and V. πρόθυμος, ἔντονος, σύντονος.
be on the alert: P. διὰ φυλακῆς ἔχειν, V. ἐν εὐφυλάκτῳ εἶναι; see watch.
