Disproportionate (adjective)
Not proportionate.
Disproportionate (adjective)
Out of proportion.
Disproportionate (verb)
To undergo disproportionation
Unproportionate (adjective)
Not proportionate; disproportionate.
Wiktionary
Unproportionate (adjective)
Not proportionate; poorly proportioned; = “disproportionate”.
Oxford Dictionary