Another word for in a flawed way?

Here are some words that could be used to replace "in a flawed way," depending on the context and the desired nuance:

General:

* Imperfectly

* Faultily

* Erroneously

* Deficiently

* Incompletely

* Inaccurately

* Unsoundly

More specific:

* For a weak reason: Precariously, tenuously, shakily

* With a lack of skill: Clumsily, ineptly, awkwardly

* With a lack of care: Carelessly, haphazardly, negligently

* With a lack of consistency: Inconstantly, erratically, inconsistently

Figurative:

* With a crack in the foundation: Flawed, brittle, fractured

* With a missing piece: Incomplete, unfinished, lacking

* With a tarnished sheen: Blemished, marred, imperfect

Example:

* "The building was constructed in a flawed way, leading to its collapse." (Could be replaced with: "The building was constructed unsoundly, leading to its collapse.")

Ultimately, the best word to use will depend on the specific situation and the desired tone.