Definition of unproportionable in English:
unproportionable
adjective (ˌ)ʌnprəˈpɔːʃ(ə)nəbl(ˌ)ʌnprəˈpɔːʃ(ə)nəbl
Not proportionable; out of proportion; disproportionate. Now rare.
Origin
Late 16th century; earliest use found in Thomas Twyne (1543–1613), physician. From un- + proportionable.