Here's what rhymes with combinable.
definable undefinable indefinable Words that almost rhyme with combinable
liable viable sizable sizeable pliable likable likeable risible liveable unlikeable unliveable desirable advisable undesirable undeniable assignable indictable decidable deniable reliable unreliable excitable ammoniacal inadvisable libidinal cognizable maniacal reconcilable analyzable ascribable notifiable survivable climbable justifiable recognizable irreconcilable realizable describable recyclable certifiable nonassignable identifiable indescribable unjustifiable verifiable classifiable demoniacal unverifiable rectifiable unrecognizable unidentifiable monomaniacal