To reduce from an inflated condition.
- To release contained air or gas from.
- To collapse by releasing contained air or gas.
- To reduce or lessen the size or importance of: Losing the contest deflated my ego.
- Economics To reduce the amount or availability of (currency or credit), effecting a decline in prices.
- Economics To produce deflation in (an economy).
- To be or become deflated: The balloon deflated slowly.