Crossword Genius

Conclude network's regressed? That's annoying (8)

Ross

I believe the answer is:

infernal

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'annoying' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?

'conclude network's regressed?' is the wordplay.
'conclude' becomes 'infer' (inferring is a kind of concluding).
'network' becomes 'LAN' (Local Area Network).
'regressed?' says the letters should be written in reverse (I've seen 'regressed' mean this).
'lan' written backwards gives 'nal'.
'infer'+'nal'='INFERNAL'

'that's' is the link.

Can you help me to learn more?

(Other definitions for infernal that I've seen before include "Of the nether regions" , "Hell-like" , "To do with hell or informally tiresome" , "To do with hell and its fires" , "Feral inn - it's hellish" .)

I've seen this clue in The Independent.
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