Useful Words (from Susie Dent)

'flapdoodler' (19th century)
: a speaker of nonsense; a deliverer of twaddle and flimflam.
‘bloviator’ (19th century)
: one who loves the sound of their own voice, who talks at length but ultimately says very little.
‘spuddle’ (17th century)
: to work ineffectively; to be extremely busy whilst achieving absolutely nothing.
'parwhobble' (19th-century English dialect)
: to dominate a conversation by talking continuously, without listening to a word from anyone else.
‘latibulating’ (17th century)
: hiding in a corner until conditions improve.
'puckfist' (17th century)
: a blustering boaster or braggart.
rogitate' (17th century)
: to ask the same question repeatedly, usually with unsatisfactory results.
'snollygoster' (19th century)
: an individual guided by personal gain rather than by principles.
hugger-muggery' (16th century)
: secretive, clandestine behaviour for the purposes of deception.
'ipsedixitism'
: the dogmatic assertion that something is 'fact' without any proof to back it up, or because someone, somewhere said it.
'throttlebottom'
: a bumbling, inept individual in public office.
‘ultracrepidarian’ (19th century)
: someone who loves holding forth on matters they know absolutely nothing about.
'snoutband' (19th century)
: someone who consistently interrupts a conversation in order to contradict or correct the speaker.
'charientism' (18th century)
: the dressing up of an insult so that it sounds like a compliment.
'bafflegab'
: talk or jargon that confuses more than it clarifies.
'cozener' (16th century)
: a cheat, deceiver, or imposter.
'arsle', (19th-century)
: verb meaning to make no progress whatsoever on a job in hand - literally, to 'shuffle backwards'.
"testiculating"
: to talk bollocks while waving your hands around ...
‘circumlocutionist’
: one who consistently speaks in a roundabout way in order to avoid addressing a question directly.
'whiffler' (17th-century)
: a chronically indecisive and evasive person who swings from one course of action to another.
‘quiddling’ (18th century)
: busying oneself with entirely trivial matters as a way of avoiding the important ones.