Final -f becomes -v before -er (lief → liever).
Use the comparative with dan (grover dan…) and the superlative with het (het grofste).
The comparative (vergrotende trap) of grof is grover. Final -f becomes -v before -er (lief → liever). Use it with 'dan': ...grover dan...
The superlative (overtreffende trap) of grof is grofst, usually used as het grofste.
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