Answer:

NEER

Answer	Crossword Clue
NEER	Not e'en once
NEER	Poetic contraction
NEER	...-do-well

NEER	....-do-well
NEER	"... the twain shall meet"
NEER	...-do-well (slacker)
NEER	..-do-well
NEER	Opposite of alway
NEER	At no time, to a bard
NEER	Poetic negative
NEER	".. the twain shall meet"

NEER	"For I ... saw true beauty till this night": Romeo
NEER	At no time, in rhyme
NEER	... -do-well
NEER	.. -do-well
NEER	Start to do well?
NEER	At no time, in verse
NEER	At no time, poetically
NEER	Less than seldom, poetically

NEER	When pigs fly, poetically
NEER	"What oft was thought but .. so well express'd": Pope
NEER	When hell freezes over, in verse
NEER	Not at any time, in verse
NEER	"Oh, thou did'st then .. love so heartily": Shak.
NEER	"When pigs flyeth!"
NEER	Poet's adverb
NEER	"What, will these hands .. be clean?": Lady Macbeth

NEER	"Would thou hadst ... been born" ("Othello")
NEER	Beginning to do-well?
NEER	"...would thou hadst ... been born" ("Othello")
NEER	"Faint heart ... won fair lady"
NEER	Not once, for poets
NEER	Not at all for Tennyson or Wordsworth
NEER	Not once, poetically
NEER	At no time, in poetry

NEER	Alway's antonym
NEER	Poetic opposite of always
NEER	Literary adverb
NEER	"A woman is a foreign land ... a man will ... quite understand" (Coventry Patmore)
NEER	Bard's contraction