What's the adjective for redder? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs red, redd, redden, rede and reddle which may be used as adjectives within certain contexts.
(astronomy) Of the lower-frequency region of the (typically visible) part of the electromagnetic spectrum which is relevant in the specific observation.
“Old Neil came in rednosed and shivering, his hair and beard encrusted with rime. 'It's that bad I must have peed icicles when I got up this morn,' he gasped.”
“Coming back from a low-level strafe four miles inside German lines, he heard the familiar crack of a whip and turned to see a rednosed Fokker biplane diving out of the clouds.”