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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Like argon and neon:

INERT: Like neon or argon
INERT: Like neon and argon
INERT: Like argon or neon.
INERT: Nonreactive, like neon and argon
INERT: Like argon and neon
INERT: Like the gases neon and argon, but not oxygen and hydrogen