The phrase "largely unrealistic" is grammatically correct and can be used in written English.
It is typically used to describe something that is mostly or largely not feasible or practical. It can be used to express a degree of doubt or skepticism about the likelihood of something happening. Example: The politician's promises during the election campaign were largely unrealistic, and many voters were disappointed when they were not fulfilled once he took office.
A survey of men who visited a sexual health clinic in the US following the removal of their prostate showed that they had "largely unrealistic expectations" of their sex lives after the procedure.
And don't discount the effects of the first Body Image Summit, a meeting convened this June in London by European editors and the British Medical Association to consider the relationship between the largely unrealistic images of women's bodies represented by most fashion models and an escalation of eating disorders in Britain.
The gay male scene, as I have experienced myself, is filled with visions of largely unrealistic male bodily perfection.
Tracey also challenged other women to re-examine their routines, and calculate the amount of time they waste on maintaining a largely unrealistic appearance.
While Won't Back Down does a nice job eliciting these emotions, the solution, a parent "takeover" of the failing school, is largely unrealistic.
We are most fearful of a mythologized criminal -- a young black man, selling drugs and gang-affiliated who will kill us as we walk in the street -- and our entire criminal justice calculus is based on this largely unrealistic fear.
What does it say about the party when its intellectual leader evidently gets his ideas largely from deeply unrealistic fantasy novels?
The EU's commitment will be accomplished largely through weak or unrealistic containment measures like carbon trading or techno-fixes like carbon sequestration and storage, not by moderating economic growth or reducing consumption.
Policing every member of a largely empathic, trusting forum seems unrealistic and unfair.
Media images of unrealistic bodies were said to be largely to blame, they said.
These methods, largely based on maximum likelihood, require the (perhaps unrealistic) assumption of a model under which the sequences evolve, and are computationally expensive.
