愠 | 慍

 After learning 温 | 溫, we now should be able to guess the meaning of our character today: 愠 | 慍, which is composed of 忄and 昷. 

We have known that忄means heart (心), whose details can be found at https://xiongzou.blogspot.com/2015/11/learn-one-chinese-character-day_20.html. And 昷 has the meaning of warming / heating up. 

Thus忄and 昷 together have the aggregated meaning of warming / heating up the heart, which logically represents "burning angry within the heart".

Let us examine the evolution history of 温 | 溫 to understand it better:

evolution history of 愠

From its Bronze script, we can tell that 愠 used to be same character as 昷, eventually Chinese ancestors added heart to 昷 to emphasize that 愠 is related to feelings.

愠 | 慍 means angry or indignant as adj, and resent or become angry as verb.

That is all for 愠 | 慍, time to enjoy a Chinese calligraphy with 愠 | 慍 inside:

参谋蜀耆英，棠阴满三郡。开怀接儿辈，色不见喜愠。
清朝贵老成，故家多黄训。佳气引春帆，长安天日近。