Bottling up emotions long-term might suggest that a character or person may not be emotionally healthy.

Emotional Health

'Bottle up' can foreshadow a dramatic emotional release or breakdown later in a story.

Reveal Tension

Used metaphorically to describe emotions, not physically restraining something.

When referring to military strategy, 'bottling up' indicates confining or trapping enemies.

Being bottled up means being at a disadvantage, often unable to move or act freely.

Can indicate a lack of resources or options, creating pressure or desperation.

Refers to the actual process of filling bottles in manufacturing or home brewing.

Bottling can be a method to preserve food and drinks for future consumption.