assiduous

adj.

constant; unremitting; diligent; persevering; industrious; attentive.

Syn: 1. continuous, tireless, persistent. 2. studious, diligent, dedulous.

Ant: inconstant, lazy.

canon

n.

an established set of principles or code of laws, often religious in nature

Syn: doctrine, dogma, maxim, order, principle, standard, tenet

canonical

adj.

following or in agreement with accepted, traditional standards

Syn: approved, authoritative, orthodox, sanctioned, imperial

Ant: unacceptable, unauthorized, unrecognized, unorthodox

ennui

n.

dissatisfaction and restlessness resulting from boredom or apathy

Syn: lassitude, listlessness, indifference

Ant: energy, enthusiasm, liveliness, interest, vigor

halcyon

adj.

calm and peaceful

Syn: balmy, bucolic, harmonious, pastoral, quiet, serene, soothing, tranquil,

Ant: excited, fierce, frenzied, turbulent, violent, wild

immutable

adj.

not capable of change

Syn: abiding, constant, enduring, permanent, sacrosanct, steadfast

Ant: flexible, variable, alterable

impassive

adj.

revealing no emotion

Syn: apathetic, composed, dispassionate, indifferent, nonchalant, phlegmatic, placid, reserved, reticent, stolid, taciturn

Ant: passionate, responsive, sensitive, susceptible, warm

imperturbable

adj.

marked by extreme calm, impassivity and steadiness

Syn: assured, complacent, composed, nonchalant, sedate, unaffected, tranquil, sanguine

Ant: excitable, irritable, doubtful, hesitant, nervous

implacable

adj.

not capable of being appeased or significantly changed

Syn: stubborn, adamant, determined, firm, indomitable, inexorable, intractable, resolute, obdurate, staunch, stringent

Ant: flexible, reasonable, willing, yielding

ineluctable

adj.

incapable of being evaded; inescapable

Syn: certain, condemned, inexorable, ordained, predetermined, unavoidable

Ant: avoidable

moribund

adj.

dying; not progressing or advancing; stagnant

Syn: fading, fated, stale

Ant: creating, growing, living, reviving

pervade

v.

to permeate throughout

Syn: diffuse, extend, fill, imbue, infuse, penetrate, transfuse

Ant: deplete, empty, void

sacrosanct

adj.

extremely sacred or inviolable; above or beyond criticism, change, or interference

Syn: consecrated, divine, hallowed, revered, venerated, exalted
Ant: condemned, cursed, disapproved

static

adj.

not moving, active, or in motion; at rest

Syn: constant, inactive, inert, passive, stagnant, stationary, unchanging

Ant: active, changeable, mobile, variable