fiendishlyadverb
uk/ˈfiːn.dɪʃ.li/us/ˈfiːn.dɪʃ.li/informalextremely:
fiendishly difficult
Thesaurus: synonyms and related words
Linguistics: very & extreme
- awful
- beyond
- classic
- classical
- deadly
- devastating
- drop dead! idiom
- eminently
- esp
- especially
- heartily
- impossibly
- perfect
- sheer
- specially
- supremely
- thoroughly
- thumping
- whole
- wide
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