High-Strung, on Edge
This page is the CodyCross answer for the clue below from Fauna and Flora, Group 163, Puzzle 5 (Dolphins and Whales).
Question is: High-Strung, on Edge
and the answer is: UPTIGHT
Word Meaning:
UPTIGHT — (colloquial) Excessively concerned with rules and order, always serious.
Definitions from Wiktionary.