il·le·git·i·mate 
/ˌɪlɪˈʤɪtəmət/ adjective
/ˌɪlɪˈʤɪtəmət/ adjective : not legitimate: such as a : born to a father and mother who are not married
▪ an illegitimate child
b : not allowed according to rules or laws
▪ They took over the government in an illegitimate [=illegal] seizure of power. ▪ an illegitimate government
c [more illegitimate; most illegitimate] : not reasonable or fair
▪ She thinks that my concerns are illegitimate. ▪ They were fired from their jobs for illegitimate reasons.
▪ an illegitimate child
b : not allowed according to rules or laws
▪ They took over the government in an illegitimate [=illegal] seizure of power. ▪ an illegitimate government
c [more illegitimate; most illegitimate] : not reasonable or fair
▪ She thinks that my concerns are illegitimate. ▪ They were fired from their jobs for illegitimate reasons.
— il·le·git·i·ma·cy /ˌɪlɪˈʤɪtəməsi/ noun [noncount]
▪ high rates of illegitimacy and teenage pregnancy ▪ the illegitimacy of the government
/ˌɪlɪˈʤɪtəməsi/ noun [noncount] ▪ high rates of illegitimacy and teenage pregnancy ▪ the illegitimacy of the government
— il·le·git·i·mate·ly adverb
