Extensive reading usually emphasizes sustained understanding and engagement with a substantial amount of accessible material. That purpose does not require forbidding every dictionary check. Use lookups selectively when they restore the message or clarify recurring useful language, while avoiding a pattern in which each unfamiliar word turns the session into intensive analysis and the text's movement disappears.
Establish whether the material supports continued meaning
Sample a section and ask whether you can follow the main situation or argument without constant assistance. If the general movement remains clear, some unknown details may be tolerable. If nearly every sentence requires explanation, the material may be better suited to close study or a later level. The distinction concerns the task and support needed, not a judgment that the source is unworthy of reading.
Choose an ordinary reading unit and keep attention on the message. Notice characters' actions, the author's point or the information relevant to your interest. You do not need to convert every unfamiliar expression into study material. Some words become clearer through recurrence, while others can remain uncertain without preventing a useful encounter with the whole text.
Look up a word when it carries a decisive relation, repeatedly blocks understanding or seems useful enough to justify the interruption. An unknown item that reverses the meaning of a warning deserves different attention from a minor descriptive detail. Use consequence and recurrence as guides rather than treating either total avoidance or exhaustive checking as proof that you are reading correctly.
Make each lookup return you to the text
Use a concise reliable reference and select the sense that fits the passage. Then reread the sentence and continue. Avoid following related links or copying the whole entry during the same window unless that has become a deliberate separate task. The lookup's useful endpoint is a more understandable message, not an expanding trail of facts detached from the reading that prompted it.
Keep notes light when the purpose is continuity. A brief mark for a recurring expression or a sentence about the section may be enough. You can choose a few items for closer study afterward if they still matter. Delaying selection helps distinguish language that genuinely affected understanding from every detail that felt novel while the page was open.
After a meaningful stretch, produce a modest response: describe the main change, explain a point or react to an idea. This gives you evidence that reading remained connected. A large page total can conceal disconnected decoding, while a small coherent response shows what the text actually communicated under the support conditions you used.
Adjust material or method if lookups become constant. You may need an easier source, more background or a short intensive session on a central pattern before returning to sustained reading. Extensive reading stays useful when access to a dictionary remains a proportionate support, helping you preserve understanding and willingness to continue rather than turning the rule about dictionaries into the main obstacle to the book.