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Improper vs Faulty - What's the difference?

improper | faulty |

In obsolete|lang=en terms the difference between improper and faulty

is that improper is (obsolete) to behave improperly while faulty is (obsolete) at fault, to blame; guilty.

As adjectives the difference between improper and faulty

is that improper is unsuitable to needs or circumstances; inappropriate; inapt while faulty is having or displaying faults; not perfect; not adequate or acceptable.

As a verb improper

is (obsolete|transitive) to appropriate; to limit.

improper

English

Alternative forms

* impropre (obsolete)

Adjective

(en adjective)
  • unsuitable to needs or circumstances; inappropriate; inapt
  • Not in keeping with conventional mores or good manners; indecent or immodest
  • Not according to facts; inaccurate or erroneous
  • Not consistent with established facts; incorrect
  • Not properly named; See, for example, improper fraction
  • (obsolete) Not specific or appropriate to individuals; general; common.
  • * J. Fletcher
    • Not to be adorned with any art but such improper ones as nature is said to bestow, as singing and poetry.

    Derived terms

    * improper divisor * improper face * improper fit * improper fraction * improper integral * improper motion * improper node * improper orthogonal transformation * improper rotation * improper use * improper workmanship

    Verb

    (en verb)
  • (obsolete) To appropriate; to limit.
  • * Jewel
    • He would in like manner improper and inclose the sunbeams to comfort the rich and not the poor.
  • (obsolete) To behave improperly
    • (Webster 1913)

    faulty

    English

    Adjective

    (er)
  • Having or displaying faults; not perfect; not adequate or acceptable.
    • They replaced the faulty wiring and it has worked fine ever since.
    I don't think you can infer that from the premise. It's a faulty argument.
  • (obsolete) At fault, to blame; guilty.
  • * 1590 , Edmund Spenser, The Faerie Queene , II.iv:
    • Her faultie Handmayd, which that bale did breede, / Confest, how Philemon her wrought to chaunge her weede.

    Usage notes

    * Nouns to which "faulty" is often applied: goods, equipment, product, wiring, construction, memory, thinking, design, hardware, software, unit, part, component, assumption, reasoning, premise, gene, operation, technique, merchandise, circuit, code, analysis, posture, machine, method, habit, process, communication.

    Antonyms

    * faultless

    Derived terms

    * faultiness