A short stressed vowel doubles the final consonant (dik → dikker).
Use the comparative with dan (platter dan…) and the superlative with het (het platste).
The comparative (vergrotende trap) of plat is platter. A short stressed vowel doubles the final consonant (dik → dikker). Use it with 'dan': ...platter dan...
The superlative (overtreffende trap) of plat is platst, usually used as het platste.
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