adjective
ready
A1
Fertig means 'ready' or 'finished' (can also mean 'done'). Used predicatively with sein (ich bin fertig) and in the structure 'mit etwas fertig sein' (with + dative) meaning 'to be finished with something'. Gradable adjective (comparative fertiger, superlative am fertigsten). Antonym: unfertig.
Examples
Ich bin mit der Arbeit fertig.
I'm finished with the work.
Die Handwerker waren erst fertig, als der Regen endlich aufhörte und die Geräte abgedeckt worden waren.
The craftsmen were only finished when the rain finally stopped and the equipment had been covered.
Details
Mnemonics
imagine a checkmark and someone saying 'fertig!' when a task is done
sounds like 'furry' but think 'finished' — 'fertig' = ready/finished
Notes
Common adjectival predicate. 'fertig sein' is a frequent fixed phrase meaning 'to be finished/ready'.