1.b> 1) (); he blundered through his examination paper ;
2) (); ; ; the negotiation was hopelessly blundered by him ;
2.b> (.i> about, along) / () / ; to blunder one's way along ; to blunder through one's work ; he managed to blunder through ;
3.b> (into, on, upon) (); ; ; to blunder against smb. [smth.] [] / ; he blundered upon the truth ; he never blundered upon a bon mot ;
to blunder awayb> (); to blunder away one's chance ;
to blunder outb> (); ; he blundered out a secret .