"unrecognizable" is a correct and usable word in written English.
It can be used to describe something or someone that can't be recognized due to having changed a lot or because of a lack of familiarity. For example, "After going through a dramatic transformation, the old, run-down house was almost unrecognizable."
So unrecognizable has a hesitant Johnson looked so far this year.
The agency charged with protecting the life of the president plunged into a leadership overhaul Wednesday that will make it largely unrecognizable from the organization it was only four months ago.
They see an American population becoming unrecognizable from the free and self-reliant people they thought they knew.
The actual object with all its millions of qualities is at one end of the spectrum, and the painting so abstracted that a depiction subject is unrecognizable is at the other end; between the two extremes lie all the possible degrees of abstraction.
It also demonstrates that the people of Vienna have in their time been governed by Romans, Italians, Spanish, French, Magyars, and Slavs and have absorbed Turkish and Yiddish words into their German tongue in a way that renders the original unrecognizable.
The playful mystery The List of Adrian Messenger (1963) featured a roster of big-name stars (including Mitchum, Frank Sinatra, Burt Lancaster, Kirk Douglas, and Tony Curtis) who were all but unrecognizable under layers of makeup.
At its most serious, this incoherence of thought extends into pronunciation itself, and the speaker's words become garbled or unrecognizable.
With dainty little steps and glides, to the right and to the left, forward and backward, in quarter turns, approaching and retreating hand in hand, searching and evading, now side by side, now facing, now gliding past one another, the ancient dance play of courtship appears here in a last and almost unrecognizable stylization and refinement.
Humans sin with one another, and their evil is connected together in the "realm of sin" in a manifold way, unrecognizable in the individual.
"There are full towns that are now unrecognizable".
The apartment was only a few blocks from the hallowed halls of Yale University, but the horrors inside were unrecognizable from any Ivy League ideal.
