Meaning & use
semi-flex
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Meanings
adjectivebefore a nouninformal
Partly able to bend, but not fully soft or bendable.
Grammar: Comes before a noun: a semi-flex boot. Do not say 'the boot is semi-flex' in careful writing; use 'semi-flexible' there.
Patterns
- semi-flex + noun
These semi-flex hiking boots give some movement at the toe but still hold the ankle firmly.
The racket has a semi-flex shaft, so it bends a little on hard shots.
He chose a semi-flex sole because a fully rigid one hurt his feet.
adjectivebefore a nouninformalsport
In sports, allowing players to move between positions or to choose some of their own games.
Grammar: Used before a noun in sports writing: a semi-flex schedule, a semi-flex roster.
Patterns
- semi-flex + noun
The league uses a semi-flex schedule, so each team picks part of its own fixtures.
Under the semi-flex rule, two of the six players can swap positions.
Coaches liked the semi-flex format because it gave them some control over matchups.
nouncountable or uncountableinformal
A material or product that bends only partly, or a thing made of it.
Grammar: Countable when it means one item, uncountable when it means the material: 'a semi-flex' for the item, 'made of semi-flex' for the material.
Patterns
- made of semi-flex
- a semi-flex
The midsole is a semi-flex that stiffens as it gets colder.
They sell three semi-flexes, each a little softer than the last.
This glue works well on semi-flex, but not on hard plastics.
Common combinations
- semi-flex sole
- A semi-flex sole is a good choice for long walks on mixed ground.
- semi-flex shaft
- The semi-flex shaft suits players with a moderate swing speed.
- semi-flex boots
- She bought semi-flex boots for winter hiking.
- semi-flex schedule
- The semi-flex schedule lets teams arrange some games themselves.
- semi-flex material
- The case is made from a semi-flex material that absorbs small knocks.
Synonyms and how they differ
- semi-flexible
- The standard, more formal word for the same idea; choose it in reports, manuals, and academic writing.
- semi-rigid
- Close in meaning but stresses that the object keeps a firm shape and bends only slightly.
- springy
- Describes something that bends and quickly returns; it says nothing about being only partly bendable.
Opposites
Word family
- flex verb
- To bend something, especially a limb or a cable.
- flexible adjective
- Able to bend easily without breaking.
- flexibility noun
- The quality of being able to bend or change easily.
- semi-flexible adjective
- The full form of the same idea, used in formal writing.
Commonly confused: semi-flex or flexible? semi-flex or semi-rigid?
semi-flex vs flexible
'Flexible' means it bends easily and fully; 'semi-flex' means it bends only partly, so the two are not interchangeable.
semi-flex vs semi-rigid
Both suggest limited bending, but 'semi-rigid' usually means firmer, closer to hard than to soft.
Practice
Which sentence uses 'semi-flex' correctly?
Choose one answer.
'Semi-flex' is an adjective placed before a noun, and it means partly bendable, which fits option A. Option B fails because 'semi-flex' already means only partly bendable, so 'completely' contradicts it. Option C uses it as a verb, which it is not, and option D needs a comparative form such as 'more semi-flex'.
Make it your own
Write a sentence using “semi-flex”, then check it and compare it with the examples above.