week vs weak

Week and weak are homophones: they sound the same but have different meanings and grammatical roles. Use simple checks and the examples below to spot which spelling fits the context.

Quick answer

week (W-E-E-K) = a seven-day period (noun). weak (W-E-A-K) = not strong; lacking power, intensity, or effectiveness (adjective).

Replace the word with "seven days" or "next Monday": if it still fits, use week.
If the sentence describes strength, quality, or feeling, use weak.
Look for time words (next, last, this) near the suspect word - they usually signal week.

Core explanation: how they function

Week names time. It appears in phrases like next week, last week, a busy week. Weak describes nouns (a weak case) or follows linking verbs (She felt weak).

week → noun: time unit. Frame: "next/last/this week" or "a week-long ...".
weak → adjective: lack of strength or force. Frame: "a weak + noun" or "felt weak".

Wrong: We'll push the launch back one more weak.
Right: We'll push the launch back one more week.
Wrong: After the operation she looked week.
Right: After the operation she looked weak.

Quick corrections: common wrong/right pairs

Read each pair aloud to reinforce the correct spelling.

Wrong: I'll see you next weak.
Right: I'll see you next week.
Wrong: She trains three times a weak.
Right: She trains three times a week.
Wrong: His evidence was week.
Right: His evidence was weak.
Wrong: Can we meet this weakend?
Right: Can we meet this weekend?
Wrong: A weak argument needs more data.
Right: A weak argument needs more data.
Wrong: I have a busy week ahead at work next weak.
Right: I have a busy week ahead at work next week.

Work examples: emails, deadlines, and feedback

At work, the wrong spelling can confuse timing or make feedback sound unprofessional. Use these ready-to-paste fixes.

Wrong: Please deliver the Q4 numbers by Friday weak.
Right: Please deliver the Q4 numbers by Friday next week.
Wrong: The review says the team's week participation affected results.
Right: The review says the team's weak participation affected results.
Wrong: We'll schedule a planning weak to align milestones.
Right: We'll schedule a planning week to align milestones.

School examples: timetables, assignments, and notes

Teachers and students mix these up in schedules and comments. Use the correct noun for time and the adjective for strength.

Wrong: The lab reports are due the first weak of May.
Right: The lab reports are due the first week of May.
Wrong: I felt too week to sit the exam.
Right: I felt too weak to sit the exam.
Wrong: Teachers will give students a study weak before finals.
Right: Teachers will give students a study week before finals.

Try your own sentence

Test the whole sentence, not just the word. Context usually makes the right choice obvious.

Casual examples: texts, posts, and chat

Quick messages cause many errors. Time words point to week; feelings point to weak.

Wrong: Do you want to grab coffee next weak?
Right: Do you want to grab coffee next week?
Wrong: I was so weak after that workout!
Right: I was so weak after that workout!
Wrong: What a weakend - I did nothing.
Right: What a weekend - I did nothing.

Rewrite help: quick templates to fix sentences

When in doubt, make either the time or the weakness explicit. Examples: wrong → correct → smoother rewrite.

Wrong: "I'll finish it next weak." →
Correct: "I'll finish it next week." → Smoother: "I'll finish the report sometime next week and send an update."
Wrong: "The presentation looked week." →
Correct: "The presentation looked weak." → Smoother: "The presentation was weak; add more evidence to support the claims."
Wrong: "We have a planning weak." →
Correct: "We have a planning week." → Smoother: "We will hold a planning week starting April 12 to align tasks."

Grammar, spacing and hyphenation notes

Spelling is the main issue, but nearby punctuation or compound forms matter too.

Hyphenate compound time adjectives: a "week-long workshop" is correct. Never write "weak-long workshop."
Weekend is one word when you mean Saturday and Sunday. "Weakend" is incorrect for that meaning.
Avoid joining or splitting words incorrectly: write "next week" (two words) and "weekend" (one word).
Usage tip: "a two-week program" uses a hyphen with the number + noun.

Wrong: She signed up for a weak-long seminar.
Right: She signed up for a week-long seminar.
Wrong: I'm off the weak end.
Right: I'm off the weekend.
Usage: Right: "Our training is a two-week program."

Memory trick + similar mistakes to watch for

Mnemonic: week has two E's - think "two E's = seven days." Weak has E-A - think "A for ache" or "anemic" to recall low strength.

Swap test: replace the word with "seven days" - if it works, use week.
Practice: write three sentences with week and three with weak to build the habit.
Also check other homophones in the same pass: there/their/they're, your/you're, weather/whether.

Wrong: I don't know weather I'll come next week.
Right: I don't know whether I'll come next week.
Wrong: Your going to the meeting next weak?
Right: You're going to the meeting next week?

FAQ

Is it "week" or "weak" for seven days?

Use week for a seven-day period. Example: "I'll be on vacation next week."

How can I remember the difference quickly?

Try the swap test: replace the word with "seven days" or "next Monday." If it still fits, use week. If you describe strength, use weak.

Can "weak" ever be a noun?

No. Weak is an adjective. For the noun form use "weakness."

Why does autocorrect change week to weak?

Autocorrect guesses based on frequency and your typing history. If it keeps changing, proofread or add shortcuts for common time phrases.

Is "weekend" related to "weak"?

No. Weekend (one word) combines week + end and means the end of the week. It is unrelated to weak (not strong).

Want a quick check?

Do a quick swap test, read the sentence aloud, or paste it into your editor for a focused scan. Those simple steps catch most week/weak mistakes.