เสียดาย
kɛθɹiː zɪwɒn kɛθɹiːksɪwɒn ɪts ei5 pɪti bʌt saɪədaɪ ɛŋkʌmpəsɪz ei5 diːpə sɛns ɒv lɒs and lɒŋɪŋ
In Chinese 可惜 (kěxī) - it's a pity, but 'siadai' encompasses a deeper sense of loss and longing.
A feeling of regret or disappointment about something that is lost, wasted, or not fully utilized, often related to missed opportunities.
Example
"ฉันเสียดายที่ไม่ได้ไปเที่ยวทะเล."