which is which

phrase

—used to say that one is unsure about the identity of each member of a group

One of the twins is named John and the other William, but I don't know which is which?

Examples of which is which in a Sentence

Recent Examples on the Web

The real skill is knowing which is which, and not letting either derail you. — Perrie Samotin, Glamour, 23 Mar. 2026

Our analysis shows-our analysis shows that the maximum extra amount that Russia could get would be $2 billion, which is which is one day of the Russian Federation’s budget. — NBC news, 22 Mar. 2026

Doesn’t matter to me which is which, so long as the rally can continue. — Josh Brown,sean Russo, CNBC, 12 Mar. 2026

Some of them are biological, some adopted, some fostered – but Babineaux-Fontenot won't tell you which is which. — Lee Cowan, CBS News, 8 Mar. 2026

Rhymes for which is which

• bewitch
• caliche
• distich
• enrich
• bitch
• ditch
• fiche
• glitch
• hitch
• ich
• itch
• kitsch