adj.
characterized by feeling or showing fond affection for; "a cherished friend"; "children are precious"; "a treasured heirloom"; "so good to feel wanted"
adj.
absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"
adj.
serving no useful purpose; having no excuse for being; "otiose lines in a play"; "advice is wasted words"; "a pointless remark"; "a life essentially purposeless"; "senseless violence"