本望|ほんもうhonmou[1]atamadaka (head-high)

1. nounlong-cherished desire
2. nounsatisfaction (from achieving one's desire)

• Synonym満足まんぞくNeutralThe everyday word for satisfaction; describes being content with a result generally, without the weight of a long-cherished wish finally fulfilled that 「本望」 carries.
• Antonym不本意ふほんいWrittenWritten/formal prose: acting against one's true will or unintentional; the exact opposite of 「本望」, a long-cherished wish achieved.
• Antonym遺憾いかんFormalFormal word for regret; used on formal occasions to express regret or dissatisfaction — the opposite of the contentment of 「本望」.

Use 「本望」 for a long-cherished wish finally fulfilled, as in 「〜できれば本望だ」; for ordinary satisfaction with a result, say 「満足」. The opposites are 「不本意」 (unwilling) and 「遺憾」 (formal regret).

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

1. 本来ほんらい持もっている望のぞみ。本懐ほんかい。
2. 満足まんぞく。