N2 — outside your level filter
fun + unbearably X
tanoshi kutetamaranai
unbearably X; X so much I can't stand it — any strong sensation, physical or emotional
早く彼に会いたくてたまらない。
hayaku kare ni aitakute tamaranai.
I want to see him so badly I can't stand it. casual
昨日からずっと気になってたまらない。
kinou kara zutto ki ni natte tamaranai.
It's been bothering me endlessly since yesterday. neutral