Guessing Unknown Words from Context

At B1 you will meet unknown words in almost every text. Stopping for each one destroys your reading speed and your comprehension. Most of the time, the sentence tells you enough.

Step 1: decide if you actually need it

Read to the end of the sentence first. Often the word doesn't matter:

The room was full of ornate furniture.

Do you need ornate to know the room had furniture in it? No. Move on.

Step 2: find the word class

• After the / a, or after an adjective → it's a noun.
• After to, or with -ed / -ing → it's a verb.
• Before a noun → it's an adjective.

Knowing what kind of word it is already narrows the meaning enormously.

Step 3: look for the four context clues

Definition — the text explains it directly:

Photosynthesis, the process by which plants make food from sunlight, happens in the leaves.

Contrast — a signal word tells you it means the opposite of something you know:

The first attempt was a disaster, but the second was flawless.

(Flawless is the opposite of a disaster: perfect.)

Contrast signals: but, however, although, unlike, whereas, on the other hand.

Example — the examples define it:

He collected memorabilia — old match tickets, signed shirts, team photos.

Example signals: such as, for example, including, like, or a dash followed by a list.

Cause and effect — the result tells you the meaning:

The bridge was so dilapidated that the council closed it.

(Something that gets closed for safety is in bad condition.)

Step 4: take the word apart

The word itself is a fifth clue. English builds meaning from pieces:

Piece	Means	Example
un-, in-, im-, dis-	not	unhelpful, impossible
re-	again	reconsider
over- / under-	too much / too little	overestimate, underfunded
mis-	wrongly	misjudge
-less	without	harmless
-ful	full of	resourceful
-able	can be done	reversible
-ise / -ify	to make	modernise, clarify

The report was inconclusive.

in- (not) + conclu(de) + -ive (adjective) — it didn't reach a conclusion. You can build that without ever having met the word.

Step 5: check your guess

Put your guess back into the sentence and see if it still makes sense. If it does, keep reading. You do not need a perfect definition — "something like decorated" is enough to keep going.

Read on a little too. Writers often repeat an important word within a few lines, and the second appearance frequently confirms or corrects your first guess for free.

When to stop and look it up

Guessing is the default, not a rule. Look the word up when:

• It is in the question, not just the passage.
• The text is a contract, a form, a medicine label or a safety notice — anything where being roughly right is not good enough.
• The same unknown word keeps appearing, which means it is central to the text.
• Your guess doesn't fit the next sentence.

How many unknown words is too many?

There is a rough threshold worth knowing: with about one unknown word in fifty, guessing works comfortably. Much beyond that — say more than two or three per line — and there isn't enough known context left to guess from, and you end up guessing from guesses.

If a text feels like that, the problem isn't your strategy. It's the text: pick an easier one and come back. Reading slightly below your limit builds fluency far faster than fighting through something far above it.

What not to do

Do not guess from a similar-looking word in your own language. False friends are common and dangerous: English sensible means reasonable, not sensitive; actually means in fact, not currently; eventually means in the end, not possibly.

Being comfortable not knowing is the actual skill. Fluent readers in a second language do not understand every word — they carry a handful of half-understood ones for a paragraph or two and let the text resolve them. The instinct to stop and be certain at every word is what keeps intermediate readers slow, and letting go of it is what makes the next level possible.

Test yourself

The quiz below gives you unknown words with context. Use the clue, not a dictionary.