false bottom; raised bottom; platform (shoes); kick (of a bottle)
Refers to a structure that creates a higher internal floor than the external bottom, used for deceptive packaging, shoe lifts, or bottle design.
Figurative use derived from the physical false bottom; implies making something seem greater than it is, often in speech or claims.
This box has a false bottom, making the contents look smaller.
He wears platform shoes to look taller.
His stories are always exaggerated; I never know how much is true.
Standard kanji spelling for the raised/false bottom sense.
Rare spelling; 上 means 'upper' and 底 means 'bottom', but this combination is uncommon.
Alternate kanji spelling; 揚げ can suggest 'fried' but is used here for the raised bottom meaning.
Rare abbreviated spelling.
Compound of 上げ (age, 'raising') + 底 (soko, 'bottom'), with rendaku voicing to ぞこ. The figurative sense of 'exaggeration' comes from the idea of artificially raising the bottom to make something appear larger.