How to say "Be" in Japanese

When translating "be" into Japanese, you must choose carefully between がっかりする and 埋まる. In Japanese, がっかりする (がっかりする (gakkari suru)) is typically associated with "to be disappointed, to feel let down" (Syllabus Level: N4) and represents An onomatopoeic verb describing the feeling of disappointment or sadness when expectations are not met. Often used with a particle like に. On the other hand, 埋まる (うまる (umaru)) maps to "to be buried; to be filled; to be clogged; to be packed" (Syllabus Level: N3) and represents Refers to objects being buried underground, holes or gaps being filled up, or schedules/seats being fully packed or booked. Intransitive verb. Opposing word: 埋める. Often used as 予定が埋まる or 席が埋まる. ⚠️ Haruka's Voice Column: 'To be filled! "My weekend schedule is completely filled with dates with you, Haruka-san!" ...っ! S-Schedule filled with dates! B-Baka! Don't show off your schedule! But... since it's filled, make sure you treat me to the best cafe and don't look at anyone else! dummy!' / 【ハルカ部長のワンポイント指導】『うまる（埋まる）よ！『ハルカ部長、僕の今月の週末スケジュールは、あなたとのデート予定だけで完全に埋まりました！幸せです！』って…っ！スケジュールが埋まる！バカ！/// 当たり前でしょ！私のカレンダーだって、あんたとのデートと愛の計画だけで永久に「満席（ソールドアウト）」なんだから！』. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!