I was looking at a jisho.org example sentence for [軽]{かる}い, and I was a bit confused about [重]{おも}たそう.
えりのスーツケースは [重]{おも}たそう だが、[実際]{じっさい}はとても[軽]{かる}い。
Although Eri's suitcase looks heavy, it's actually very light.
I figured out that そう was for "looking like," but the た confused me... I then learned that [重]{おも}たい is just another form of [重]{おも}い. During my research, I found another adjective like this from a Maggie Sensei lesson: [眠]{ねむ}い/[眠]{ねむ}たい.
So now I'm wondering two things:
- What are the differences between the adjectives ending in い and たい?
- Do all i-adjectives have such a pair?
Thank you.