◌᷂

Diacritical mark

 * 1)  lenis.

Usage notes
When doubled to indicate extreme lenition, ⟨◌᷂᷂⟩, the diacritics should be adjacent, not stacked.

An illustration from the Unicode proposal:
 * 'grind' (tight lip closure on p and no aspiration)
 * 'sea' (looser lip closure on p and a minimum of aspiration)
 * 'digging' (full aspiration)