Catch-as-catch-can Definition

kăchəz-kăch-kăn, kĕchəz-kĕch-
adjective
Using or making do with whatever means are available; irregular.
Made a catch-as-catch-can living doing odd jobs.
American Heritage

(idiomatic) Intermittent; only when possible or when the opportunity presents itself.

My efforts lately have been catch-as-catch-can, not carefully planned.
Wiktionary

(wrestling) Of a form of amateur freestyle wrestling (catch wrestling)

Wiktionary
adverb
Ad hoc, or in any way possible.
Wiktionary
verb
(idiomatic) To use any available means or methods.
Wiktionary