adverb
for peace of mind; to ease one's mind; as a comfort
Used when doing something that provides temporary reassurance or relief, even if it may not solve the underlying problem. Often implies the action is not truly effective but makes one feel better.
気休めにしかならないけど、お茶でも飲もう。
It's just for peace of mind, but let's have some tea.
彼は気休めに「大丈夫だよ」と言った。
He said 'It's okay' just to reassure me.