bubble under

bubble under

To grow gradually and inconspicuously in scale, strength, potency, etc. There seems to be a pervasive sense of despair bubbling under in the small country. Word of the company's merger plans have already started to bubble under among most news outlets.
See also: bubble
Farlex Dictionary of Idioms.
See also:
  • bubble up
  • sidle up
  • sidle up (from someone or something)
  • sidle
  • sidle away
  • sidle away (from someone or something)
  • dip out
  • slip through
  • slip by
  • steal out of (some place)