1. of a person, unhealthy, out of sorts.
2. (also away to the fritz) of an object, not functioning properly; thus antonym off the fritz, working.
3. (also fritzer) of a situation, position, job, in jeopardy.
4. (also on the fritter) of machinery, broken down, not working.
[20C+] to spoil, to render out of order, to put a stop to.