"reddened" in the verb sense
1. blush, crimson, flush, redden
turn red, as if in embarrassment or shame
"The girl blushed when a young man whistled as she walked by"
"The setting sun reddened the sky"
turn red or redder
"The sky reddened"
"reddened" in the adjective sense
1. crimson, red, reddened, red-faced, flushed
especially of the face) reddened or suffused with or as if with blood from emotion or exertion
"crimson with fury"
"turned red from exertion"
"with puffy reddened eyes"
"red-faced and violent"
"flushed (or crimson) with embarrassment"
2. ablaze, inflamed, reddened
lighted with red light as if with flames
"streets ablaze with lighted Christmas trees"
"the inflamed clouds at sunset"
"reddened faces around the campfire"
Source: WordNet® (An amazing lexical database of English)
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