Add -er for the comparative and -st for the superlative.
Use the comparative with dan (wijder dan…) and the superlative with het (het wijdste).
The comparative (vergrotende trap) of wijd is wijder. Add -er for the comparative and -st for the superlative. Use it with 'dan': ...wijder dan...
The superlative (overtreffende trap) of wijd is wijdst, usually used as het wijdste.
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