ものなら
also: もんなら
Meanings
1
if I could; if we could
usually written using kana alone
Expresses a hypothetical wish or desire, often with a sense of 'if only I could...'. Follows the volitional form of a verb (e.g., 行けるものなら).
If I could go, I'd like to visit that place one more time.
If you can do it, just try.
2
if one were to ... then ... (unpleasant result)
usually written using kana alone
Used in the pattern ...うものなら, ...ようものなら, or ...まいものなら. It implies that if someone dares to do something, a bad consequence will follow. Often carries a warning or threatening tone.
If you dare to defy him, you'll probably be fired immediately.
If you were to say such a thing, she would definitely get angry.