1. Extremely and sharply
   - bitterly, bitingly, bitter 
2. In a shrill voice
   - shrilly

See also: piercing

• subordinating conjunction
• subordination
• subordinative
• suborn
• subornation
• subornation of perjury
• suborner
• suboxide
• subpart
• subphylum
• subphylum Cephalochordata
• subphylum Craniata
• subphylum Pentastomida
• subphylum Tunicata
• subphylum Urochorda
• subphylum Urochordata
• subphylum Vertebrata
• subplot
• subpoena
• subpoena ad testificandum
• subpoena duces tecum
• subpopulation
• subprime
• subprogram
• subrogate