plunge in
idiomTo start a new endeavor enthusiastically and wholeheartedly, though possibly without experience.
- 01
bus plunge
A phrase often used in filler story headlines in print newspapers, prior to the adoption of computer-aided typesetting and publishing methods, as it filled out the usual width of a column in the eight-column layout then prevalent in the industry.
- 02
take the plunge
To begin any major commitment.