having participated in something for a long time / one who has participated in something for a long time / (Internet slang) oldfag

(organic chemistry) nonacosane

to say and leave behind / to forget to say

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.

(telephony) a common Japanese telephone greeting: hello; used when answering the telephone / used to confirm that the person being addressed is listening, or to confirm if anyone is listening

put away

Short for ドリップコーヒー (dorippu kōhī).

肋骨: rib

(informal) weakling child