| Main Entry: | acme |
| Part of Speech: | noun |
| Definition: | pinnacle of achievement or physical object |
Synonyms: |
apogee, capstone, climax, culmination, height, high point, highest point, meridian, optimum, peak, summit, top, ultimate, vertex, zenith |
Antonyms: |
nadir |
| Main Entry: | ceiling |
| Part of Speech: | noun |
| Definition: | top of a room |
Synonyms: |
baldachin, beam, canopy, covert, dome, fan vaulting, groin, highest point, housetop, plafond, planchement, plaster, roof, roofing, timber, topside covering |
| Notes: | a ceiling is the overhead upper surface of a room or an upper limit on what is allowed, while sealing is the act of treating something to make it repel water |
Antonyms: |
floor |
| Main Entry: | ne plus ultra |
| Part of Speech: | noun |
| Definition: | highest degree |
Synonyms: |
extreme case, extremity, furthest point, highest point, limit, nth degree, perfection, ultimate, utmost, utmost extent, uttermost |