遺児|いじiji[1]atamadaka (head-high)

1. nounorphan; child left by the deceased
2. nounabandoned child

• Synonym孤児こじNeutralAny child without parents, as in 「孤児院」; can also mean a friendless person. 「遺児」 stresses a child left by the deceased and can also mean an abandoned child.
• Synonym親なし子おやなしごCasualA plain, colloquial way to say a child with no parents, whether they died or not; 「遺児」 is a written word stressing a child left behind by the deceased.
• Synonym遺孤いこWrittenA rare written word for a minor child left after a parent's death; synonymous with 「遺児」, which is the usual choice in everyday use.
• Synonymみなし児WrittenAn old-fashioned written term for a helpless orphan, with a pitying nuance; 「遺児」 rather stresses a child left behind when a parent has died.

For a child left behind by a parent's death, use 「遺児」, as in 「交通遺児」. For children without parents in general, use 「孤児」. 「遺孤」 means the same as 「遺児」 but is rare.

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

1. 親おやが死しんでしまった子こ。
2. 捨て子すてご。