This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Present participle of to apologize.

"“I will have to take him back to the corral, señora,” he said, his expression apologizing that the ride had to end so soon."

apologized    apologizes    apologizing   

support    fend for    defend   

colour    mitigate    palliate    color    plead   

excuse    justify    rationalize    defend