てたまらない

てたまらない is used to express an intense feeling or strong desire that the speaker cannot bear or suppress. It conveys a sense of being overwhelmed by the emotion, such as extreme happiness, longing, pain, or desire. The pattern attaches to a preceding verb or adjective in its te-form (or appropriate connective form) and ends with たまらない to emphasize the unbearable or overwhelming nature of the feeling. Use it when you want to convey a vivid, almost uncontainable emotion, often in personal, subjective statements. It is more emotional than milder expressions like すごく or とても and can come across as dramatic in casual speech. Typical contexts include expressing longing for something/someone, intense eagerness, or intense discomfort.