Learn That Word

Synonyms for Smothered (same or very similar meaning)

WordNet sense 1 (overlaid or spread or topped with or enclosed within something; sometimes used as a combining form):

WordNet sense 2 (held in check with difficulty):
stifled, strangled, suppressed

WordNet sense 3 (held back or restrained or prevented):

From the ODE community, based on WordNetadd/edit