Pos. and neg., e.g

• Pos. and neg
• H and C, on faucets
• Enemies, in slang
• Plus and minus: Abbr
• Sometimes they attract (Abbr.)
• Antonyms, for short
• Big and small, e.g.: Abbr
• Antonyms: Abbr.
• Sm. and lge., e.g

Wiktionary Word definitions in Wiktionary
interj. (misspelling of oops English)