If needed - means you perform a given action IF you need to. When needed - means you perform an action WHEN you need to. Examples: If you continue to feel pain, take a painkiller when needed. Add more pepper to the food if needed. There isn't a big difference. See a translation. 1 like. branekalis. 17 Oct 2019. English (US) Scientists at COP28 Say Carbon Removal Fast Becoming Necessary. If the use of fossil fuels doesn't plummet, the world could be forced to rely on expensive technologies that haven't been proven 1 adj Something that is necessary is needed in order for something else to happen. oft it v-link ADJ to-inf (Antonym: unnecessary) I kept the engine running because it might be necessary to leave fast, We will do whatever is necessary to stop them, Is that really necessary?, Make the necessary arrangements. if necessary vs when necessary. A complete search of the internet has found these results: if necessary is the most popular phrase on the web. More popular! if necessary. 243,000,000 results on the web. Some examples from the web: The meaning of IF NECESSARY is if it is needed. How to use if necessary in a sentence. Nov 14, 2012 Be persuasive. phrase. If you say that something will happen if necessary, when necessary, or where necessary, you mean that it will happen if it is necessary, when it is necessary, or where it is necessary. If necessary, the airship can stay up there for days to keep out of danger. adjective. uk / ˈnes.ə.ser.i / us / ˈnes.ə.ser.i / Add to word list. B1. needed in order to achieve a particular result: He lacks the necessary skills for the job. I don't have much time so I won't be staying any longer than necessary. Just do what's necessary and then leave. If necessary, we can always change the dates of our trip. /ˈnesəsəri/ /ˈnesəseri/ Idioms. that is needed for a purpose or a reason synonym essential. necessary to do something It may be necessary to buy a new one. necessary for somebody to do something It doesn't seem necessary for us to meet. necessary for something Food is necessary for survival. I'll make the necessary arrangements. The Green Bay Packers essentially wrote the book on how to lose to an inferior opponent during Monday night's 24-22 loss to the New York Giants. The Packers had won three straight games entering Week 14, including victories over the Detroit Lions and Kansas City Chiefs in back-to-back weeks, but Matt LaFleur's team played losing football in 1. Input your text below. 2. Get it corrected in a few minutes by our editors. 3. Improve your English! if there is necessary vs when there is necessary. A complete search of the internet has found these results: if there is necessary is the most popular phrase on the web. More popular! if there is necessary. 368,000,000 results on the web. If you say that something will happen if necessary, when necessary, or where necessary, you mean that it will happen if it is necessary, when it is necessary, or where it is necessary. If necessary, the airship can stay up there for days to keep out of danger. gSjyt.