Add -er for the comparative and -st for the superlative.
Use the comparative with dan (warmer dan…) and the superlative with het (het warmste).
The comparative (vergrotende trap) of warm is warmer. Add -er for the comparative and -st for the superlative. Use it with 'dan': ...warmer dan...
The superlative (overtreffende trap) of warm is warmst, usually used as het warmste.
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