深不可測

deep and unmeasurable (idiom); unfathomable depths / incomprehensible / enigmatic and impossible to predict

no; not so / (bound form) not; un-

can / may / able to / to approve / to permit / to suit / (particle used for emphasis) certainly / very

used in 可汗[ke4 han2]

old variant of 深[shen1]

deep / depth / deeply / (of a color) dark / deep / rich

deep (lit. and fig.)

cannot / should not / must not

cannot; should not; must not

to survey / to measure / to conjecture