filed (filled) with

Many writers type filed when they mean filled. Filed = submitted or recorded; filled = made full or occupied. Read the sentence, not just the letters, and use a quick substitution test (submitted vs made full) to choose the right word.

Quick answer

Use filed for submitting or recording something formally. Use filled for making something full, occupying space, or describing an abstract fullness (emotion, role, capacity).

filed = submitted / recorded (filed a complaint, filed taxes, filed with HR)
filled = made full or occupied (filled a cup, filled a seat, filled with relief)
Quick test: substitute 'submitted' → filed. Substitute 'made full' → filled.

Core explanation: the one-line distinction

Filed (from file) means to submit, register, or store something officially. Filled (from fill) means to make something full or to occupy space, including abstract spaces like emotions or roles.

Paperwork or official action → filed (file a claim, file with the court).
Capacity, contents, or feelings → filled (fill a container, be filled with joy).

Spelling, spacing, and hyphenation pitfalls

Neither word uses hyphens or extra spaces; the trap is sound-alike confusion, fast typing, or autocorrect. Watch for the specific error 'filed with' when you mean 'filled with' (e.g., 'filed with joy').

No hyphen: write filled, not fill-ed or filld.
If 'with' is followed by an emotion or contents, change filed → filled.
Autocorrect may favor filed if you often type legal terms-check the meaning, not just the suggestion.

Wrong: The box was filed with books.
Right: The box was filled with books.

Grammar note: verbs, objects, and collocations

File usually pairs with records or administrative nouns (complaint, motion, taxes). Fill pairs with containers, seats, forms, or with emotions.

Common with filed: file a complaint, file taxes, file with the court/HR.
Common with filled: fill a cup, fill a seat, fill out a form, filled with pride.
Particle verbs: fill out / fill in (complete a form). Don't swap those for file.

Real usage: work, school, and casual examples

Below are ready-to-use corrections grouped by context. Each wrong sentence is followed by a clearer revision.

Work - Wrong: I filed out the expense report for last month.
Right: I filled out the expense report for last month.
Work - Wrong: We filled a patent with the legal department.
Right: We filed a patent with the legal department.
Work - Wrong: The contract was filled with the procurement team.
Right: The contract was filed with the procurement team.
School - Wrong: The students filed their homework into the submission folder.
Right: The students filled their homework folder with completed assignments.
School - Wrong: Please file the answer sheet and return it to the instructor.
Right: Please fill in the answer sheet and return it to the instructor.
School - Wrong: They filed out the quiz before class.
Right: They filled out the quiz before class.
Casual - Wrong: My heart was filed with gratitude after the surprise party.
Right: My heart was filled with gratitude after the surprise party.
Casual - Wrong: I filed my lunchbox before heading out.
Right: I filled my lunchbox before heading out.
Casual - Wrong: The theater was filed to capacity for opening night.
Right: The theater was filled to capacity for opening night.

Try your own sentence

Test the full sentence instead of the isolated phrase. Context usually makes the right choice obvious. If you want a quick check, paste the sentence into a context-aware tool below.

Examples: common wrong/right pairs

Short pairs you can copy into a draft or keep as a cheat sheet.

Wrong: The cabinet was filed with old invoices.
Right: The cabinet was filled with old invoices.
Wrong: He filed out the questionnaire before the interview.
Right: He filled out the questionnaire before the interview.
Wrong: The committee filled a complaint against the vendor.
Right: The committee filed a complaint against the vendor.
Wrong: She filed the cup to the brim with tea.
Right: She filled the cup to the brim with tea.
Wrong: I filed the application incorrectly.
Right: I filled in the application incorrectly. (If you mean you completed it wrong.)
Wrong: The form was filed with missing fields.
Right: Better: The form had missing fields. (Avoid 'filled with missing fields'.)
Wrong: The stadium was filed to the rafters.
Right: The stadium was filled to the rafters.
Wrong: He filed the survey and described his satisfaction.
Right: He filled out the survey and described his satisfaction.

Rewrite help: fix your sentence in three steps

Three-step method: 1) Decide whether the action is submission or making something full. 2) Swap to filed or filled. 3) Check collocation (file a complaint; fill out a form).

Paperwork template: [subject] filed [document] with [office/person]. - They filed the complaint with HR.
Form template: [subject] filled out/in the form. - She filled out the application.
Capacity/emotion template: [subject] was filled with [emotion/contents]. - The room was filled with applause.

Problem: The survey was filed by many participants. Rewrite: The survey was filled out by many participants.
Problem: I filed my glass at the sink. Rewrite: I filled my glass at the sink.
Problem: They filled a grievance with management. Rewrite: They filed a grievance with management.
Problem: The inbox was filed with unread messages. Rewrite: The inbox was filled with unread messages.
Problem: Please file in the blanks. Rewrite: Please fill in the blanks.
Problem: She filed the survey incorrectly. Rewrite: She filled out the survey incorrectly. (Or: She filed the survey incorrectly with HR, if you mean submitted it wrongly.)

Memory tricks and quick checks

Two short mnemonics: file → file cabinet → records/submission. fill → full → container/emotion.

Substitute test: replace the verb with 'submitted' and then with 'made full.' Choose the one that makes sense.
If 'with' follows: person/office → filed with; emotion/contents → filled with.
If it's about completing a form, use filled out / filled in (not filed out).

Similar mistakes to watch for

People who swap filed/filled sometimes confuse other pairs or particle verbs. Fixing them together improves clarity.

fill out / fill in vs. file: use fill out/fill in for completing forms; file for submitting to an authority.
compliment vs. complement: compliment = praise; complement = completes or enhances.
then vs. than: then = time/result; than = comparison.

FAQ

When should I use filed vs filled?

Use filed for submitting or recording documents (filed a complaint, filed taxes). Use filled for physical fullness or abstract fullness (filled the cup, filled with pride). The 'submitted' vs 'made full' substitute test is reliable.

Can I say 'filled out a form' or 'filed out a form'?

Say 'filled out a form' (or 'filled in'). 'Filed' is for submitting the completed form: 'I filled out the form, then filed it with HR.'

Is 'filed with' ever correct for emotions (e.g., 'filed with joy')?

No. Use 'filled with' for emotions. 'Filed with' is only correct when something was submitted to a person or agency (filed with the court).

Why doesn't spellcheck catch this error?

Both words are correctly spelled, so basic spellcheck won't flag the wrong choice. A contextual grammar checker or a quick manual check is needed to catch misuse.

What's the fastest way to proof a sentence before sending an important email?

Ask two questions: 1) Is this about submission/record-keeping? If yes, use filed. 2) Is this about making something full, occupying space, or an emotion? If yes, use filled. When unsure, run a contextual check or ask a colleague to glance at it.

Want a second pair of eyes?

If a sentence still feels off-especially in work emails or applications-use a context-aware grammar checker to flag whether you meant filed or filled. A quick check prevents confusion and keeps your meaning clear.