This is the 289th most frequent Japanese word.
のみ
"のみ" means "only" or "nothing but."
Here, 'のみ' is used to mean 'only', restricting the scope to 'members'.
この店は会員のみ利用できます。
This store is available to members only.
In this instance, 'のみ' is used in the sense of 'just', emphasizing that drinking water alone is insufficient.
健康のために水を飲むのみでは十分ではない。
For health, drinking water alone is not enough.
Here, 'のみ' emphasizes exclusivity to 'facts', aligning closely with the meaning 'only' or 'simply'.