Planned, serious.
Barren, empty, unfruitful, depleted
casual or informal are antonyms of formal.
Society to mean humankind or people antonyms are nonhuman or animal. Society to mean an organization or institution antonyms are an individual or casual. Society to mean an upper class antonyms are ordinary or common.
The opposite of fruitless is 'fruitful'
The tree is fruitless.
The word "fruitless" is an adjective. It describes something as unproductive, unsuccessful, or without results.
If something is considered "fruitless" it is meant to bear no fruit. Therefore if an endeavor or behavior is fruitless it is meant to accomplish nothing. If a relationship is fruitless it would be one that offers nothing to the participants. Any effort that has no significant outcome is considered fruitless.
Our trip to the department store was fruitless- they had closed early.
To identify a fruitless mulberry tree, look for trees with no fruit, as fruitless mulberries do not produce berries. Additionally, fruitless mulberry trees often have glossy, dark green leaves and a dense, rounded canopy shape.
"Bob thought that asking a vocabulary question on answers.com would be fruitless, but he was pleasantly surprised to receive a reply." "Although Annie applied to several jobs, her efforts were fruitless as she did not have enough experience."
The cast of A Fruitless Errand - 1915 includes: Guss
That tree was fruitless when the gardener checked on it. I hope that answers your question.~There are two meanings for fruitless this should cover both:Detectives were unable to find the thieves who had stolen all the apples, oranges and pears from the victim's home. Their investigations were fruitless, as was the victim's home! ☺
Having travelled across the city, the salesman had a fruitless journey as the shop was closed.