Antonyms of adj impermanent

2 senses of impermanent

Sense 1
impermanent (vs. permanent), temporary -- (not permanent; not lasting; "politics is an impermanent factor of life"- James Thurber; "impermanent palm cottages"; "a temperary arrangement"; "temporary housing")

permanent (vs. impermanent), lasting -- (continuing or enduring without marked change in status or condition or place; "permanent secretary to the president"; "permanent address"; "literature of permanent value")
        => abiding, enduring, imperishable -- (unceasing; "an abiding belief"; "imperishable truths")
        => ageless, aeonian, eonian, eternal, everlasting, perpetual, unending, unceasing -- (continuing forever or indefinitely; "the ageless themes of love and revenge"; "eternal truths"; "life everlasting"; "hell's perpetual fires"; "the unending bliss of heaven")
        => indissoluble -- (used of decisions and contracts)
        => standing (prenominal) -- (not created for a particular occasion; "a standing committee")

Sense 2
impermanent -- (existing or enduring for a limited time only)

INDIRECT (VIA finite) -> infinite -- (having no limits or boundaries in time or space or extent or magnitude; "the infinite ingenuity of man"; "infinite wealth")

Similarity of adj impermanent

2 senses of impermanent

Sense 1
impermanent (vs. permanent), temporary -- (not permanent; not lasting; "politics is an impermanent factor of life"- James Thurber; "impermanent palm cottages"; "a temperary arrangement"; "temporary housing")
       => acting (prenominal) -- (serving temporarily especially as a substitute; "the acting president")
       => ephemeral, passing, short-lived, transient, transitory, fugacious -- (lasting a very short time; "the ephemeral joys of childhood"; "a passing fancy"; "youth's transient beauty"; "love is transitory but it is eternal"; "fugacious blossoms")
       => episodic -- (limited in duration to a single episode; "an account concerned primarily with episodic events such as the succession of rulers")
       => evanescent -- (tending to vanish like vapor; "evanescent beauty")
       => fly-by-night -- (ephemeral; "the symphony is no fly-by-night venture")
       => improvised, jury-rigged, makeshift -- (done or made using whatever is available; "crossed the river on improvised bridges"; "the survivors used jury-rigged fishing gear"; "the rock served as a makeshift hammer")
       => interim -- (serving during an intermediate interval of time; "an interim agreement")
       => pro tem, pro tempore -- (for the time being; "he is the president pro tem"; "designated him to act as consul protempore"- H.H.Fiske)
       => shipboard -- (casual or ephemeral as if taking place on board a ship; "shipboard romances")
       => temporal -- (not eternal; "temporal matters of but fleeting moment"- F.D.Roosevelt)
       => terminable -- (capable of being terminated after a designated time; "terminable employees"; "a terminable annuity")
       => working (prenominal) -- (adopted as a temporary basis for further work; "a working draft"; "a working hypothesis")
          Also See-> unstable#1

Sense 2
impermanent -- (existing or enduring for a limited time only)
       => finite (vs. infinite) -- (bounded or limited in magnitude or spatial or temporal extent)