やつ・奴yatsu[1]atamadaka (head-high)

1. nounfellow; guy; chapderogatory or familiar
   欠点けってんはあるけれども、彼かれはいい奴やつだ。↗

   For all his faults, he is a good fellow.
2. nounthing; object
   新あたらしいバイクは買かえないのでこの古ふるいやつでなんとか間に合まにあわせなくてはならないだろう。↗

   I can't afford to buy a new bike, so I'll have to manage with this old one.
3. pronounhe; she; him; herderogatory or familiar
   やつは僕ぼくを裏切うらぎったんだ！↗

   He stabbed me in the back!

• Synonym野郎やろうCasualRefers to a man and often carries abuse, as in 「この野郎」; 「奴」 is more neutral and can refer to people or things.
• Synonym奴さんやっこさんCasualUsed with affection or teasing to mean 'that guy'; 「奴」 is more casual and also covers things.
• Synonym香具師やつCasualInternet slang spelling borrowed to write 'guy'; in everyday writing use 「奴」 or 「やつ」.
• RelatedガイCasualA loanword for an admirable man, said with goodwill; its use is narrow — unlike 「奴」 it can't be tossed out casually for just anyone.

In colloquial speech, use 「奴」 for 'that guy' or 'that thing', as in 「いい奴」 and 「嫌な奴」. Use 「野郎」 to curse at someone, 「奴さん」 for affectionate teasing, and 「ガイ」 only to speak of a man you admire.

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

1. （やつ）人ひとや物ものなどをぞんざいに言いう語ご。
2. （やつ） 三さん人称にんしょう、特とくに男性だんせいに対たいする卑称ひしょう。