That guy is late again.
Hey, you guys, let's go drinking!
bastard; asshole; son of a bitch
Strongly derogatory and vulgar; used as an insult or angry exclamation, primarily by men. Often directed at someone the speaker is angry with.
You bastard, I'll knock you out!
That son of a bitch tricked me.
男 is the neutral, plain word for 'man', whereas 野郎 is slangy and can carry either rough camaraderie or outright contempt.
野郎 is a rough, informal (often disparaging or joking) way to refer to a group of guys, whereas 男たち is neutral in tone.
野郎 (やろう, 'guy/bastard') and 女郎 (じょろう, 'courtesan/prostitute') look almost identical in kanji but differ completely in reading and meaning.
Standard kanji spelling; widely used in both neutral and derogatory contexts.
Kana spelling is common in casual writing, especially for the derogatory sense.
Originally a young man, especially one whose forelock had been shaved on reaching adulthood. It also named actors in 野郎歌舞伎 and later broadened into a familiar or strongly derogatory term for a man.