Synonyms for Authoritative

Synonyms starting with letter S

• sound

  reliable, valid, characteristic
• sanctioned

  official, authorized, authorised
• standard

  true
• solid

  authentic
• supreme

  official
• 

  scholarly

  valid, reliable
• strong
• self-assured

  commanding, domineering
• sovereign

  official
• substantial

  characteristic
• superior
• statutory

  authorized, authorised
• significant
• satisfactory

  characteristic
• secure
• safe
• self-confident

  self-assured
• sure
• supported

  valid
• straight
• sure-enough
• set
• strict
• satisfying
• superlative
• sage
• skillful
• self-reliant
• self-possessed
• sounder
• sincere
• subject
• susceptive
• sworn to
• stable
• solvent
• standing up
• staple
• stock
• surefire