てしかたがない・
てしかたがない and てしょうがない express a feeling, sensation, concern, or urge that is so strong that the person experiencing it cannot control or ignore it.
What the construction emphasizes
The point is not merely that a feeling exists, but that it keeps pressing on the experiencer and is difficult to control. A particularly common pattern is 気になってしかたがない. The construction also works naturally with pain, heat, sleepiness, longing, anticipation, irritation, and similar strong experiences.
Typical feelings and sensations
試験の結果が気になってしかたがない。
I cannot stop worrying about the exam results.
AnalyzeThis is a characteristic use for a concern that repeatedly occupies one's mind.
昨夜から歯が痛くてしょうがない。
My tooth has been hurting unbearably since last night.
AnalyzeHere the construction intensifies a physical sensation.
故郷の家族に会いたくてしかたがない。
I miss my family back home so much that I can hardly stand it.
AnalyzeA desire ending behaves like an i-adjective here, changing to the form ending in たくて.
In conversation
しょうがない is especially natural in spontaneous conversation like this.
Whose feeling is it?
Because this construction describes an inner experience, an unmarked sentence most naturally presents the speaker's own feeling. For another person's feeling, show how you know it—for example, by reporting what that person said.
母は弟の帰りが遅いので、心配でしょうがないと言っている。
My mother says she is beside herself with worry because my brother is late coming home.
AnalyzeThe reporting expression makes clear that this is the mother's stated feeling.
Choosing among similar intensity expressions
てしかたがない and てしょうがない are broadly usable for strong, uncontrollable feelings, concerns, urges, and sensations. てたまらない more strongly presents the experience as unbearable and especially favors desires, likes, dislikes, and sensations. てならない is more restricted, often describes a thought or feeling that wells up spontaneously, and fits formal reflective writing more readily.
More examples
来月の旅行が楽しみでしかたがない。
I can hardly wait for next month's trip.
Analyze隣の部屋の音が気になってしょうがない。
I cannot stop being bothered by the noise from the next room.
Analyze大事な書類をなくしたのではないかと不安でしかたがない。
I cannot help worrying that I may have lost the important documents.
Analyze今日は朝から眠くてしょうがない。
I have been terribly sleepy since this morning.
Analyze締め切りが近づくにつれて、焦ってしかたがなかった。
As the deadline approached, I could not help feeling increasingly anxious.
Analyze彼は面接の結果が気になってしかたがないと言っていた。
He said he could not stop worrying about the interview results.
Analyze