遮る|さえぎるsaegiru[3]nakadaka (mid-high)

1. godan verb, transitive verbto interrupt; to obstruct (a view, someone's way, etc.); to block (light, wind, etc.); to intercept; to cut off
   この大木たいぼくで光ひかりがすっかりさえぎられている。↗

   The light is completely blocked out by the big tree.

• Synonym阻むはばむWrittenWritten/formal prose. Stops an advance or thwarts an effort, as in 「行く手を阻む」「優勝を阻む」; 「遮る」 stresses blocking from in between.
• Synonym妨げるさまたげるNeutralHinders something from proceeding, as in 「睡眠を妨げる」; the focus is on keeping things from going smoothly, where 「遮る」 stresses something coming in between.
• Synonym塞ぐふさぐNeutralPlugs or stops something up, and can block a passage, as in 「耳を塞ぐ」「道を塞ぐ」; the focus is on making it impassable rather than cutting off view or light.
• Synonym止めるとめるNeutralStops or halts something, as in 「車を止める」; its range is much broader than 「遮る」, from parking a car to holding back tears.
• Synonym遮断しゃだんWrittenWritten/formal prose. Cuts something off completely, as in 「音を遮断する」; the nuance is total isolation, stronger than 「遮る」.
• Synonym阻害そがいWrittenWritten/formal prose. Obstructs development; the nuance is abstract hindrance, not physical blocking.
• Synonym阻止そしNeutralStops an action or keeps it from going ahead, as in 「侵入を阻止する」; the focus is on halting the act itself, not on blocking a view or light.
• Synonym立ちはだかるたちはだかるNeutralBlocks the way standing with legs spread, or describes difficulties looming ahead, as in 「壁が立ちはだかる」; 「遮る」 covers light and views too.
• Related断つたつWrittenWritten/formal prose. Cuts something off or severs it, as in 「退路を断つ」; the nuance is cutting completely, not just blocking from view.
• Related妨害ぼうがいWrittenWritten/formal prose. Obstructs or interferes with an activity, as in 「営業妨害」; the focus is on disrupting something in progress.
• Related断ち切るたちきるNeutralSevers ties or breaks a habit or vicious cycle, as in 「未練を断ち切る」; it often implies resolve, though it can also cut off a supply line or retreat.
• Related邪魔じゃまCasualColloquial. Gets in the way or disturbs, as in 「邪魔をしないで」; the nuance is being a nuisance, while 「遮る」 names the act of blocking itself.
• Related割り込むわりこむNeutralCuts into a line or conversation, as in 「話に割り込む」; the nuance is squeezing in and interrupting, not blocking the way.
• Related中断ちゅうだんNeutralInterrupts something midway, as in 「話を中断する」; the nuance is pausing a process, not blocking a view, light or path.
• Related打ち切るうちきるWrittenWritten/formal prose. Terminates something midway, as in 「交渉を打ち切る」; the nuance is ending it for good, not blocking.
• Related封じるふうじるNeutralSeals or blocks something, as in 「口を封じる」; the nuance is forcibly stopping movement or speech, not cutting off a view.
• Related中止ちゅうしNeutralCalls an activity off, as in 「雨天中止」, whether before it starts or partway through; the stress is that it will not go on, not a temporary pause.
• Related抑えるおさえるNeutralHolds something down or keeps it in check, as in 「感情を抑える」「出血を抑える」; the nuance is control, not blocking from view.
• Related差し支えるさしつかえるNeutralMeans to hinder or get in the way of something, as in 「仕事に差し支える」; the nuance is causing inconvenience.
• Related封鎖ふうさWrittenWritten/formal prose. Forcefully blockades roads, ports and the like; the nuance is large-scale sealing off, beyond blocking a view or path.
• Related立ちふさがるたちふさがるNeutralStands in front and bars the way, as in 「前に立ちふさがる」; typically a person blocking with their body, while 「遮る」 can block light or a view too.
• Related差し障るさしさわるWrittenWritten/formal prose. Means to hinder or adversely affect something; rare in modern usage — 「差し支える」 is the usual word today.
• Related封ずるふうずるWrittenFormal, literary form of 「封じる」; rarely used in modern Japanese.
• Relatedお邪魔おじゃまCasualColloquial. A polite set phrase for disturbing someone or visiting, as in 「お邪魔します」; it is courtesy language, not a blocking verb.
• Related途切らせるとぎらせるNeutralTransitive verb meaning to cause something to stop midway; examples of actual use are scarce.
• Antonym通すとおすNeutralAntonym. Lets something pass through, as in 「道を通す」; it is the opposite of the blocking sense of 「遮る」.
• Antonym開けるあけるNeutralOpens doors, parcels and the like, as in 「窓を開ける」; not a direct antonym of 「遮る」 — they contrast only in whether something can pass.

Use 「遮る」 for blocking light, a view, a path or someone's speech: 「日差しを遮る」「話を遮る」「行く手を遮る」. To thwart an advance, 「阻む」 also works; for a person standing in the way, 「立ちふさがる」; for plugging something up, 「塞ぐ」; for cutting off completely, 「遮断」. The opposite is 「通す」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 見みえなくする。遮蔽しゃへいする。遮光しゃこうする。
2. 間まに入はいって邪魔じゃまをする。進路しんろをふさぐ。
3. 行動こうどうや発言はつげんを制せいする。