Synonyms for Inefficacious

Synonyms starting with letter U

• unproductive

  ineffective, ineffectual
• useless

  ineffectual, affect
• unsuccessful

  ineffectual, ineffective
• unavailing

  ineffectual, ineffective
• unprofitable

  ineffectual
• unfruitful
• uneffective
• unable
• unavailable
• unfit
• unskillful
• unqualified
• unskilled
• unattainable
• unworkable
• unserviceable
• unrewarding
• unimportant
• unnotable
• unfitted
• unfeasible
• unreal
• unusable
• unwise
• unbusinesslike
• unnegotiable
• unsanctioned
• unprepared
• untrained
• uneconomical