in·ex·haust·ible 
/ˌɪnɪgˈzɑ:stəbəl/ adjective
/ˌɪnɪgˈzɑ:stəbəl/ adjective : impossible to use up completely : impossible to exhaust
▪ The world's supply of oil is not inexhaustible. ▪ He seems to have inexhaustible energy.
▪ The world's supply of oil is not inexhaustible. ▪ He seems to have inexhaustible energy.
— in·ex·haust·ibly /ˌɪnɪgˈzɑ:stəbli/ adverb
▪ We do not have an inexhaustibly large supply of oil.
/ˌɪnɪgˈzɑ:stəbli/ adverb ▪ We do not have an inexhaustibly large supply of oil.
