unaccented

Adjective

• (used of vowels or syllables) pronounced with little or no stress
  • a syllable that ends in a short vowel is a light syllable
    
  • a weak stress on the second syllable
    

• used of syllables
  • an atonic syllable carries no stress
    

Related words

• Synonyms: 
  light , weak , atonic
• Antonyms: 
  tonic , accented