ˈ ̷ ̷| ̷ ̷ adverb
Etymology: Middle English welneih, wel-neh, from wel well + neih, neh nigh
: very nearly : almost
the resulting recording is well-nigh perfect — Thomas Heinitz
the right of any senator to speak out at well-nigh any time — Lindsay Rogers
for well-nigh a quarter of a century — Blackwood's