Day 61 Learnt some new words

Today I spent some time learning a few words that I have come across often but have never considered learning. So today's 'first' was a vocabulary building exercise.  Perhaps some of these will come handy when blogging.

1. Decrepitude- Worn out, Broken down due to old age, illness or hard use

2. Vitriolic- very bitter, harsh or corrosive in tone: vitriolic criticism

3. Iconoclast- one who attacks established beliefs or institutions, unorthodox and destructive

4. Pigeonholed- Treat or classify according to a mental stereotype, labelled

5. Cocksure- overconfident, arrogant