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He who hesitates is lost.

Prov. People should act decisively. Jill: Should I apply for that job? At first I thought I definitely should, but now I don't know.... Jane: She who hesitates is lost. Call that girl and ask her out. Call her right now. He who hesitates is lost.
See also: he, hesitate, lost, who

hesitate over something

to pause before acting on something; to suspend action about someone or something. We are hesitating over the final decision because we have some doubts about the competitors. Do not hesitate too long over this matter.
See also: hesitate, over

If there's anything you need, don't hesitate to ask.

a polite phrase offering help in finding something or by providing something. (Often said by a host or by someone helping someone settle into something. See also If you don't see what you want, please ask (for it).) Mary: This looks very nice. I'll be quite comfortable here. Jane: If there's anything you need, don't hesitate to ask. "If there is anything you need, don't hesitate to ask," said the room clerk.
See also: anything, ask, hesitate, if

he who hesitates is lost

One who cannot come to a decision will suffer for it, as in I couldn't make up my mind, and now the offer has expired-he who hesitates is lost. Although the idea is undoubtedly older, the present wording is a misquotation or an adaptation from Joseph Addison's play Cato (1712): "The woman that deliberates is lost."
See also: he, hesitate, lost, who

he who ˈhesitates (is ˈlost)

(saying) if you delay in doing something you may lose a good opportunity: You should have applied for that job. I’m sure you would have got it. Remember, he who hesitates...
See also: he, hesitate, who
References in periodicals archive ?
Since it's so clear that you should never ever hesitate to tackle underperformance, then let's answer, "Why do so many leaders hesitate?
I have no doubt that they will not hesitate to kill us, perhaps within a week or so if there is no response.
in accordance with its inherent right under Article 51 of the Charter of the United Nations, would not hesitate to act in self-defense to respond to any attack against the Iranian nation and to take appropriate defensive measures to protect itself, its people and its officials.
If I have an event to attend, he never hesitates to give me any time I may need to participate as a member of the Civil Air Patrol.
With this oddball project in the works, Hamlin says she won't hesitate to try a similar approach when building on affordable sites in the future.
In the first paragraph of his Editor's Note, Matthew Rothschild didn't hesitate to mention that he is an atheist ("Thank You Notes," Note, January issue).
But the Disability Rights Commission says the disabled must be given leeway or it won't hesitate to act.
Our investigators won't hesitate to shut them down.
The only problem is--bossy Ana Garcia will come along and she doesn't hesitate to remind Billy of her seniority.
and--as the Watergate incident has shown--doesn't hesitate to place you under both physical and electronic surveillance.
RODDY GRANT last night warned Celtic stars Gordon Strachan won't hesitate to hit them where it hurts.
Americans do not hesitate to pass American technology on to Israeli corporations; the latter then improve it in various ways for their own use.
At a time when artists' names function as logos in this industry that contemporary art is becoming, we should admire the daring of an artist who does not hesitate to change her practice completely, to abandon a personal aesthetic that has only just been "branded" in order to explore new forms of expression.
Their economic vulnerability--as dancers, as artists, as people of color in a society whose institutions privilege those who are affluent and white--cannot be underestimated, However, this book's value lies in the author's curiosity and enthusiastic determination to go all the way there: Let's talk about what we're really thinking when we watch a performer of another race or what we might say to someone of our own race but hesitate to reveal in public.
People with diabetes have an increased risk of heart disease, but many doctors hesitate to prescribe cholesterol-lowering drugs for people with normal or borderline cholesterol, says Helen M.