っぽい

Etymology
Emphasis of earlier form, in turn apparently an shift from , based on earlier kana spelling.

Suffix

 * 1) -like, -ish, -esque

Usage notes

 * Inflects as an -i adjective.
 * Follows nouns, stems of adjectives, and continuative forms of verbs.
 * In certain contexts, this may have overtones that the quality is inappropriate or unexpected, contrasting with  with overtones that the quality is appropriate and expected.  Compare the contextual contrast between English suffixes  and  or, where the former is negative and the latter is positive: