How many letters does the top answer for “lake in soviet union” have?

The most common answer is charvaklake (11 letters).

Crossword clue: lake in soviet union

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

charvaklake 11 letters wd-fact-v3

city in soviet union 50% similar → aneniinoi, bunhe, chystiakove

desert in soviet union 50% similar → ryndesert

dish from soviet union 50% similar → dressedherring, mimosasalad

mountain in soviet union 50% similar → mountadelung, sherkala, shkhara