Synonyms of impracticality

2 Syllables
daftness, folly, follies
3 Syllables
worthlessness, dottiness, foolishness
4 Syllables
uselessness, senselessness, unwiseness
5 Syllables
unlikelihood, imbecility
6 Syllables
impossibility, unfeasibility, illogicality, unworkability, irrationality, irrationalities, illogicalities, impossibilities
7 Syllables
impracticability, unattainability, inadvisability, inapplicability