also: じじい · じい
noun
Neutral or familiar term for an elderly man; can also mean one's own grandfather. Usually written in kana.
See also: 祖父 (おおじ)
近所のじじがいつも公園で将棋を指している。
The old man in the neighborhood is always playing shogi in the park.
じじの家
noun
old geezer; old fart
Derogatory term for an old man; often written in katakana as ジジイ. Used to express contempt or annoyance.
あのジジイ、また文句言ってるよ。
That old geezer is complaining again.
I went to visit my grandfather's house.
Shortened form; may appear in compounds or very casual speech.
Casual, slightly rough variant; often used in the derogatory sense.
Katakana variant; less common than ジジイ for the derogatory sense.
Katakana spelling strongly associated with the derogatory sense; it is usual for that sense.
Kana spelling is common.
The reading じじ is a reduplicated form of じ (old man), which may be related to 爺 (old man). The variant じじい adds the suffix い, possibly emphatic or colloquial. The exact derivation is uncertain.