週|しゅうshuu[1]atamadaka (head-high)

1. noun, noun (suffix)week
   それはその前まえの週しゅうに買かったものでした。↗

   I had bought it the week before.

• Synonym週間しゅうかんNeutralWith a numeral it gives a duration, as in 「二週間」; it also marks special weeks like 「交通安全週間」. 「週」 names a particular week or serves as a frequency unit.
• SynonymウィークNeutralA loanword seen mostly in compounds like 「ゴールデンウィーク」; rarely used on its own, and everyday speech normally says 「週」.

Use 「週」 for a week or as a counting unit, as in 「来週」 and 「週に3回」; for a span of weeks say 「週間」. 「ウィーク」 turns up mainly in loan compounds like 「ゴールデンウィーク」.

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

1. （シュウ）時間じかんの単位たんいの一ひとつで、7日間かかんを単位たんいとするもの。特とくに、日曜にちよう日又ひまたは月曜日げつようびを基点きてんとする7日間かかんを言ゆう。