ones thing (noun) expertise/expertness: knowledge, proficiency
Sinonime: apart, asunder, at large, baggy, clear, detached, disconnected, easy, escaped, flabby, flaccid, floating*, free, hanging, insecure, lax, liberated, limp, loosened, movable, not fitting, released, separate, slack, slackened, sloppy, unattached, unbolted, unbound, unbuttoned, uncaged, unclasped, unconfined, unconnected, undone, unfastened, unfettered, unhinged, unhooked, unlatched, unlocked, unpinned, unrestrained, unrestricted, unsecured, unshackled, untied, wobbly
Antonime: ignorance, inexpertness,
lack