Sentence:  For the case of Jupiter , the radio emission spectrum is definitely not like the spectrum of a black-body radiator , and it seems <WSD>very</WSD> likely that the radiation reaching the earth is a combination of thermal radiation from the atmosphere and non thermal components . 
Meaning of the word marked with <WSD> tags:  used as intensifiers; `real' is sometimes used informally for `really'; `rattling' is informal