Optimistic Attitude; the Nubbed Side of a Battery

This page is the CodyCross answer for the clue below from Campsite Adventures, Group 827, Puzzle 2 (Bathing Suit).

Question is: Optimistic Attitude; the Nubbed Side of a Battery

and the answer is: POSITIVE

Word Meaning:

POSITIVE — Included, present, characterized by affirmation.

Definitions from Wiktionary.