everyone is accountable for their own actions—17th century—may refer to herrings being hung when up for sale (that is to say: every piece of merchandise must sell on its own merits)
a conscientious objector—UK, 1916—from the initial syllable of the noun ‘conscientious objector’ and the suffix ‘-ie’, used to form familiar diminutives
UK, 1931—sports (originally golf): a style of play characterised by an emphasis on luck rather than skill—the image is of a golfer who trusts to luck when hitting the ball
(intransitive): to spend the summer—UK, 1797, in the following title: The Sea Side, a Poem, in a Series of familiar Epistles, from Mr. Simkin Slenderwit, summerising at Ramsgate, to his dear Mother in Town
very boring or unexciting—‘(as) dull as ditchwater’ (1770)—the later phrase ‘(as) dull as dishwater’ (1832) is probably due to mispronunciation of ‘ditchwater’ in the original phrase
to describe or portray someone or something in very general terms, avoiding or neglecting the finer details—UK, 1808—alludes to a style of painting characterised by the use of broad brushstrokes