Annoying, Irritating, Tiresome
This page is the CodyCross answer for the clue below from Science Lab, Group 302, Puzzle 1 (Erlenmeyer Flask).
Question is: Annoying, Irritating, Tiresome
and the answer is: IRKSOME
Word Meaning:
IRKSOME — Marked by irritation or annoyance; disagreeable; troublesome by reason of long continuance or repetition
Definitions from Wiktionary.