strictly

strictly — adverb

1. with complete and firm enforcement of rules, where breaking them leads to seriou

1.adverbB2
Definition

with complete and firm enforcement of rules, where breaking them leads to serious consequences.

Example

The school strictly forbids students from using phones during class.

strictly forbids — collocation with verbs of prohibition

Airport security rules are strictly enforced by customs officers.

Common collocations
  • strictly forbidden
  • strictly prohibited
  • strictly enforced
  • strictly controlled
  • strictly regulated
Synonyms
  • severely

    more focus on harshness of enforcement

  • rigorously

    more formal; emphasises thoroughness

  • stringently

    very formal; used in legal or regulatory contexts

Antonyms

Grammar Patterns

strictly + verb (forbid/prohibit/enforce/control)

Usage Note

Commonly paired with verbs of prohibition and enforcement: forbid, prohibit, ban, enforce, control, regulate.

Common Mistakes

The teacher is strictly with students.
The teacher is strict with students.
'strictly' is an adverb; use 'strict' after a linking verb.
Smoking is strict prohibited.
Smoking is strictly prohibited.
the adverb 'strictly' is needed before the adjective 'prohibited'.

2. relating to one single person, group, or purpose, and not including anything bey

2.adverbB2
Definition

relating to one single person, group, or purpose, and not including anything beyond that.

Example

The contents of this email are strictly confidential — please do not share them.

strictly confidential — common fixed phrase

The training workshop is strictly for department heads only.

Common collocations
  • strictly confidential
  • strictly private
  • strictly limited
  • strictly for
Synonyms
  • exclusively

    emphasises that nothing else is included

  • solely

    emphasises a single purpose or group

  • only

    more general and less formal

Antonyms

Grammar Patterns

strictly + adjective (confidential/limited/private)

strictly + for + noun

Usage Note

Often paired with adjectives such as confidential, limited, private, or personal to indicate that something is restricted to a narrow scope.

Common Mistakes

This information is strict confidential.
This information is strictly confidential.
'strictly' is the adverb form needed before adjectives.

3. in an accurate or precise way, according to the exact meaning of words or rules.

3.adverbB2
Definition

in an accurate or precise way, according to the exact meaning of words or rules.

Example

That statement is not strictly accurate — the project finished under budget, not on time.

not strictly accurate — hedging pattern for nuanced correction

Strictly speaking, a tomato is a fruit, though many people treat it as a vegetable.

strictly speaking — fixed discourse marker

Common collocations
  • strictly speaking
  • strictly true
  • strictly accurate
  • strictly correct
Synonyms
  • precisely

    similar meaning but not used in the 'strictly speaking' construction

  • exactly

    more general and less formal

  • accurately

    focuses on correctness of facts

Antonyms

Grammar Patterns

strictly speaking

not strictly + adjective (true/accurate/correct)

strictly + adjective (true/accurate)

Usage Note

The phrase 'strictly speaking' is a fixed discourse marker used to clarify facts or correct a common belief. Place it at the start of a clause for maximum clarity.

Common Mistakes

Strictly, this rule applies to everyone.' (ambiguous)
Strictly speaking, this rule applies to everyone.
without 'speaking', the meaning becomes unclear.
It is not strictly truly.
It is not strictly true.
use the adjective form after 'strictly', not another adverb.

4. used to emphasise that something must happen without exception, or that a statem

4.adverbC1
Definition

used to emphasise that something must happen without exception, or that a statement is completely true in all cases.

Example

Attendance at the safety briefing is strictly required for every new worker.

strictly required — emphasis on universal obligation

The new policy applies strictly to all departments, from sales to logistics.

Common collocations
  • strictly required
  • strictly necessary
  • strictly applies
  • strictly limited
Synonyms
Antonyms

Grammar Patterns

strictly + past participle (required/limited/forbidden)

strictly + adjective (necessary/true)

Usage Note

Unlike sense 1, this sense does not imply punishment for breaking rules — it simply stresses that something applies in every case. 'Strictly necessary' is a common fixed phrase in this sense.

Common Mistakes

You are strictly to finish this today.' (unnatural word order)
You are strictly required to finish this today.
'strictly' modifies 'required', not the infinitive.
Idioms

strictly speaking

idiom

This phrase is used to say that you are following the exact meaning of a word or rule.

Strictly speaking, a tomato is a fruit, not a vegetable.

Is that, strictly speaking, the correct way to use the term?

Word family

  • strict
    adjectiveB1
  • strictness
    nounC1
  • stricter
    adjective (comparative)B2
  • strictest
    adjective (superlative)B2

Synonym discussion

Sense: adverb/1

All four words describe firm enforcement, but they differ in tone and context. Strictly is the most general and neutral term, used for rules, prohibitions, and limits (e.g. 'smoking is strictly prohibited'). Severely adds a sense of harshness or suffering, often used with punishment or criticism (e.g. 'the driver was severely punished'). Rigorously emphasises thoroughness and careful attention to detail, common in academic or scientific contexts (e.g. 'the data was rigorously tested'). Stringently is the most formal of the four, typically appearing in legal, regulatory, or financial writing (e.g. 'lending standards were stringently applied'). In everyday conversation, strictly is the safest choice; the other three belong in more formal or specialised registers.

strictly ↗severely ↗rigorouslystringently

Etymology

LatinOld FrenchEnglish

Strictly comes from the Latin word 'strictus', meaning 'drawn tight' or 'narrow'. This was the past participle of 'stringere' (to draw tight, bind). The sense of 'tight control' entered English through Old French 'estrict' in the 15th century, and the adverb form 'strictly' followed soon after, first used for literal tightness and later evolving to describe rules, limits, and precise standards.