from the beginning; originally; all along
Indicates that a situation or fact has been true from the start, often with a nuance of 'it was never otherwise'.
He was against the plan from the beginning.
I knew all along that there was no chance of winning.
Used to state something obvious or naturally expected, often in formal or written contexts.
Of course, safety is the top priority.
not to mention ...; not only ... but also ...
Used in the pattern ...はもとより...も to mean 'not only ... but also ...' or 'let alone ...'. Often formal or written.
This shop is popular not only with locals but also with tourists.
He can speak not only English but also Chinese.
He can speak not only English but also Chinese.
Of course I already know that.
That plan was impossible from the start.
当然 stresses that something is 'naturally to be expected', whereas 元より (sense 'of course') simply asserts it as obvious without that logical emphasis.
Rare kanji form; it is rarely used.