le millier

The French word "millier" means "thousand" or "a thousand units." It refers to an approximate or rounded number of thousands.

Explanation:

• "Millier" is a noun and is used to express roughly a thousand of something, but not an exact number. For example, "Il a dépensé un millier d'euros" means "He spent about a thousand euros."
• It can be pluralized to "milliers" when referring to multiple thousands, like "des milliers de personnes" (thousands of people).

Differences with synonyms:

• "Mille": This means exactly one thousand. It is a cardinal number and doesn't change form in the plural. For example, "mille personnes" (one thousand people).
• "Millier": Like said, it means roughly or around a thousand, often used when the count is approximate or large.
• "Millier" implies some indefiniteness or estimation, whereas "mille" is precise and exact.

Summary:

• "Mille" = exactly 1000
• "Millier" = around 1000 or loosely used to denote thousands (often plural "milliers" for multiple thousands).