crucial /krooˈshəl/

1. Testing or decisive
2. Essential, very important
3. Very good (slang)
4. Crosslike
5. Of the nature of a crux

cruˈcially adverb

• dock-dues
• docked
• docken
• dockens
• docker
• dockers
• docket
• docketed
• docketing
• dockets
• docking
• dockings
• dockisation
• dockisations
• dockise
• dockised
• dockises
• dockising
• dockization
• dockizations
• dockize
• dockized
• dockizes
• dockizing
• dock-labourer