Some words which are technically compound words have become so commonplace and well-known that hyphenating them can actually make their meaning less clear. For example, "lunchtime" and "roommate" don't need to be hyphenated, as these common words' meanings are perfectly clear without hyphens. Note that in some cases, hyphens are optional: both "high school" and "high-school" are generally considered acceptable. Here is an example of compound words that don't need hyphens: I will read you a story at bedtime, but only if you correct the misprints in your book report . As noted above, except in some exceptional cases, most words with prefixes don't need hyphens and will look cumbersome if an unnecessary hyphen is added. There are too many of these "normal" prefixes that don't require a hyphen to list, but here are just a few: "pre-", "post-", "non-", "un-", "anti-", "re-", "bi-", "di-", and "de-". Here is an example of words with prefixes that  don't need hyphens: The recycled paper was strangely unaffected by the heat of the fire. When a compound word or phrase can be used as both a verb and a noun or adjective, you generally shouldn't include a hyphen if the word is used as a verb. For instance, the term "back up" can be used as a verb and a noun to mean both "to make a copy of something for safekeeping" and "a copy of something", respectively. Thus, you would write "back up" as a verb like this: "Please back up your hard disk data," and write it as a noun like this: "He is our back-up plan if the other candidate doesn't want the job."  Here is an example of a verb that doesn't need a hyphen:  Tell the repairman to fix it.   However, the same phrase can use a hyphen when it becomes an adjective: Call our usual fix-it guy, please. Some words, like "today" and "tonight", were once hyphenated like normal compound words. This is generally not done in modern writing, so you shouldn't feel any need to include these superfluous hyphens unless you're specifically trying to mimic an old-fashioned tone or style. Here is...

TL;DR in Indonesian:
Jangan menggunakan tanda hubung pada kata majemuk bahasa Inggris yang sudah sangat umum. Jangan menggunakan tanda hubung untuk sebagian besar kata berawalan dalam bahasa Inggris. Jangan gunakan tanda hubung untuk kata kerja bahasa Inggris. Jangan gunakan tanda hubung untuk kata majemuk kuno atau antik. Jangan menggunakan tanda hubung setelah kata "very" atau kata keterangan yang berakhiran "-ly". Jangan menggunakan tanda hubung untuk kata sifat komparatif dan superlatif dalam bahasa Inggris. Jangan gunakan tanda hubung pada istilah kimia.