Becoming

How can I say, "I am becoming ____". For example, "becoming angry" or "becoming tired".

Would it be "okotte naru"? "Okori naru"?


Also, what about "starting to ...", like starting to rain? Ame ga furi hajimeru?

Meiwaku wo shitakunai. Thanks!

...dasu or hajimeru.
W/ common expression
(カッカッと) okori dasu or hajimeru,
tsukare dasu or ga dehajimeru
(ドシャブシャと)ame ga furi dasu or hajimeru,
(ワッハッハと) warai dasu or warai hajimeru,
(ワーワー　or メャ＜)naki dasu or hajimeru

For "getting tired," the verb "to tire" is "tsukareru/tsukaremasu,"
- Tsukarete kita. (I started to get tired.
"...(te) kuru/kimasu" is you "begin to fall into a condition of..."

"okoru/okorimasu" is the verb "to get angry, to get/show/act upset."
So if you want to say someone *started* to get/act angry, you can say
- Okori hajimamata.

Since this verb is more "describing/observing" someone get/act angry, if you want to say "I started to get angry," you would want to use another verb: atama ni kuru/kimasu." If you want to say something like "As I listened to the story, I started getting angry,"
- Hanashi wo kiite itara, atama ni ki hajimeta.

The same for "starting to rain.
- Ame ga furi hajimeta. (It started to rain.)