っぽい => Seems A; A-ish N3
Adjectival, Description
っぽい => seems like; somewhat; -ish; easily does; often does ~ N2
いっぽう(で) => on one hand, on the other hand; although ~ N2
Compare
のを忘れた => to forget; to leave carelessly; to be forgetful of; to forget about N4
[一方「いっぽう」]だ => Change A continues, A does not stop N2
Miscellaneous
[一方「いっぽう」] => On one hand A, on the other, B; Although A, at the same time, B N2
Contrast,Surprise
これといって…ない => Not... worth mentioning, not... special N2
Emphasize
てやってくれないか => to do a favor; request a favor; do something for ... N4
Correction
いっそ => I'd rather... N2
Coercion
これ/それ/あれ => this/that N5
Spatial relations
いっさいない => Not at all N2
Emphasize negative meaning
ないでくれ => please don't N4
Ban