Synonyms for rock

noun

1. A solidified form of earth

   stone, mineral mass, dike, mineral body, earth crust; see also metal, mineral, ore.

   Types of rocks include: igneous, sedimentary, stratified, metamorphic; concretion, gypsum, alabaster, limestone, freestone, lodestone, sandstone, conglomerate, marble, dolomite; chalk, soapstone, slate, shale, mica; granite, lava, pumice, basalt, felsite, peridot, quartz, obsidian, porphyry, rhyolite, ironstone, gneiss, tufa, schist.

2. A piece of rock, sense 1

   stone, boulder, cobblestone, pebble, fieldstone, cliff, crag, promontory, scarp, escarpment, reef, chip, flake, sliver, building stone, paving block, slab.

3. Anything firm or solid

   defense, support, Rock of Gibraltar; see foundation 2.

4. Rhythmic popular music

   rock-and-roll, heavy metal, hard rock, punk rock, progressive rock, acid rock, country rock, folk rock, rhythm and blues, soul music, Motown, funk, house music, dance music, disco, pop; see also dance 1, music 1.

on the rocks*

1. bankrupt, destitute, impoverished;

2. in ruins, foundered, in a shambles;

verb