This is shown as being atamadaka. According to Wiktionary, it is only atamadaka for the sense of "sternly".
For both senses of the word, including the much more common meaning of "surely", the pitch accent is heiban. So that pitch accent should be displayed first.
This is shown as being atamadaka. According to Wiktionary, it is only atamadaka for the sense of "sternly".
For both senses of the word, including the much more common meaning of "surely", the pitch accent is heiban. So that pitch accent should be displayed first.