So large and conspicuous that it would be extremely difficult to overlook.

(simile, US) very quickly, in a great hurry.

As soon as something is said, it will be done.

It is preferable to be cautious in one's choices and actions than to act recklessly and suffer afterwards.

It is better to prevent the creation of a problem than to have to deal with it afterwards.

(colloquial, now principally US, dated) Alternative form of as tight as Dick's hatband

The medical treatment for an illness produces a worse net result than the illness does (or threatens a non-negligible risk of doing so), especially via adverse effects.

Adhering more stringently to Roman Catholic practices and doctrine than is required by church doctrine.

It's better to do something late, than to never do it at all.

(family, idiomatic) Family relations and loyalties are stronger than relationships with people who are not family members.