忘れる, わすれる
Conjugated: 忘れた
Ichidan verb, Transitive
to forget, to leave carelessly, to be forgetful of, to forget about, to forget (an article)
傘忘れないでね。
忘る, わする
Conjugated: 忘れた
Godan verb, Archaism
to lose something
殊に, 異に, ことに
Adverb
1. especially, particularly, unusually, above all
Archaism
2. additionally