っぽい is typically used with adjectives and nouns to give your verdict on something based on how something looks or acts. Used with i-adjectives the final い of the adjective is dropped.

やすっぽいくつ
A cheap-looking bag.

Context: Regardless of the price, you think the bag looks cheap.

It can simply be added to nouns.

子供こどもっぽい
Childish.

っぽい almost always carries a negative connotation and so the following is unnatural:

おいしっぽいもの!()
[Delicious-looking food.]

Here we would use 〜そう instead.

おいしそうなもの
Delicious-looking food.

You may also see it used with the verb “to be angry” and “to forget”. Here we need the verb stem.

おこっぽい
Short-tempered.
わすっぽい
Forgetful.

While not “proper” Japanese, young people may attach it to the end of the standard form of the verb as a sort of colloquialism.

彼女かのじょなやんでいるっぽい
Something seems to be bothering her.
You May Also Like

Decisions: ことにする

JLPT N4. Used in both writing and conversation. We use the below structure to show that we have…

Too Much: すぎる

To say something is “too much” or “too small” or that we drank “too much” and so forth,…

Expressing a Way or Method: ~方

To recap, the verb stem is the polite form of the verb with the ます removed. Verb Dictionary Polite…

Regret at an Action (てしまう)

We can use the te form with the group 1 verb しまう to express regret at an action.…