From Longman Dictionary of Contemporary Englishbuck up phrasal verb1 HAPPYto become happier, or to make someone happier Come on, buck up, things aren’t that bad!buck somebody ↔ up You need something to buck you up.2 buck up!HURRY British English old-fashioned used to tell someone to hurry up Buck up, John! We’ll be late.3 informal to improve, or to make something improve It’ll be a long time before the situation starts to buck up.buck something ↔ up a company that is looking to buck up its networking capabilities4 buck your ideas upIMPROVE British English informal used to tell someone to improve their behaviour or attitude → buck→ See Verb table
Examples from the Corpus
buck your ideas up• Meanwhile, both Severiano Ballesteros and Jose-Maria Olazabal had bucked their ideas up. 