Learn Romanian: Această clădire este complet accesibilă. - This building is completely accessible.

Both mean "this building" and are grammatically correct. Placing the demonstrative adjective before the noun (această clădire) means you must drop the definite article from the noun, and this order sounds slightly more formal or emphatic. Placing it after the noun (clădirea aceasta) requires the definite article on the noun and is much more common in everyday spoken Romanian.

Why doesn't the word for "completely" (complet) agree with the feminine noun like accesibilă does?

In this sentence, complet acts as an adverb modifying the adjective accesibilă, answering the question "how accessible?". In Romanian, adverbs do not change form to agree with a noun's gender or number. They almost always share the exact same form as the masculine singular version of the adjective.

How do adjectives ending in -bil like accesibilă form their plurals?

Adjectives ending in -bil (like accesibil, posibil, incredibil) follow a very regular pattern. The feminine singular takes -ă (accesibilă), the masculine plural takes -i (accesibili), and the feminine plural takes -e (accesibile). If you were talking about multiple buildings, you would say Aceste clădiri sunt complet accesibile.

Could I use în totalitate instead of complet in this sentence?