1. 含糊的：inexplicably 无法说明的 | inexplicit 含糊的 | inexplorable 无法探险的

2. 不明了的：inexplicably 到无法说明的程度 | inexplicit 不明了的 | inexplosiveunexplosive 不爆炸的

3. 暧昧的; 含糊的 (形)：inexplicably 无法说明地; 难以理解地 (副) | inexplicit 暧昧的; 含糊的 (形) | inexpressible 无法形容的, 不可言传的, 难以表达的 (形)

4. 不明了的/暧昧的/含糊的：inexplicably /到无法说明的程度/ | inexplicit /不明了的/暧昧的/含糊的/ | inexplicitly /不明嘹地/

1. implied though not directly expressed
    inherent in the nature of something

    e.g. an implicit agreement not to raise the subject
           there was implicit criticism in his voice
           anger was implicit in the argument
           the oak is implicit in the acorn

    Synonym: implicit