Merriam-Webster's Dictionary and Thesaurus - Merriam-Webster [924]
Nep·tune noun : the planet 8th in order from the sun
— Nep·tu·ni·an adjective
nep·tu·ni·um noun : a short-lived radioactive element
nerd noun : an unstylish or socially inept person; especially : one slavishly devoted to intellectual pursuits
— nerdy adjective
Ne·re·id noun : a sea nymph in Greek mythology
1nerve noun 1 : SINEW, TENDON 2 : any of the strands of nervous tissue that carry nerve impulses between the brain and spinal cord and every part of the body 3 a : power of endurance or control : FORTITUDE b : the quality or state of being bold : BOLDNESS, DARING 4 plural : NERVOUSNESS 5 : a vein of a leaf or insect wing — nerved adjective Synonyms [3a] bravery, courage, daring, fearlessness, fortitude, gallantry, guts, hardihood, heart, heroism, stoutness, valor—more at COURAGE [3b] audacity, boldness, brass, brazenness, cheek, chutzpah, daring, effrontery, gall, presumption, sauce, sauciness, temerity—more at EFFRONTERY 2nerve verb nerved; nerv·ing : to give strength or courage to Synonyms brace, forearm, fortify, ready, steel, strengthen—more at FORTIFY nerve cell noun : NEURON; also : CELL BODY nerve gas noun : a chemical weapon damaging esp. to the nervous and respiratory systems nerve impulse noun : a physical and chemical change that moves along a process of a neuron after stimulation and carries a record of sensation or an instruction to act nerve·less adjective 1 : destitute of strength or courage 2 : exhibiting control or balance Synonyms [1] effete, frail, soft, spineless, weak, wimpy, wishy-washy—more at WEAK [2] imperturbable, unflappable, unshakable—more at UNFLAPPABLE nerve–rack·ing or nerve–wrack·ing adjective : extremely trying on the nerves ner·vous adjective 1 : FORCIBLE, SPIRITED 2 : of, relating to, or made up of neurons or nerves 3 : easily excited or annoyed : JUMPY