incapable of being justified or explained
without a basis in reason or fact
"baseless gossip"
"the allegations proved groundless"
"idle fears"
"unfounded suspicions"
"unwarranted jealousy"
lacking justification or authorization
"desire for undue private profit"
"unwarranted limitations of personal freedom"
Not warranted; being without warrant, authority, or guaranty; unwarrantable.