The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

forlorn, despairing, miserable, wretched, grief-stricken: They
are inconsolable over the death of their dog.
inconspicuous
adj. unnoticeable, unnoticed, unobtrusive, unostentatious,
insignificant, indefinite, indistinguishable, undistinguished;
modest, unassuming, discreet: Wearing a grey coat and hat, he
was quite inconspicuous in the crowd. He played an inconspicuous
role in the entire affair.
inconstancy
n. changeableness, fickleness, irregularity, mutability,
variability, unsteadiness, unsteadfastness, capriciousness,
volatility, mercurialness or mercuriality, inconsistency,
unreliability; faithlessness, unfaithfulness: How do you deal
with inconstancy in one you thought a friend?
inconstant
adj. changeable, mutable, fickle, capricious, mercurial,
volatile, vacillating, unsteady, unsteadfast, irresolute,
unreliable, undependable, fluctuating, wavering, erratic,
inconsistent, flighty, unstable, unsettled, fitful, vague,
indefinite, variable, moody: His supporters proved inconstant,
and he fell from power. The inconstant wind blew their craft
hither and thither.
incontinent
adj. 1 unrestrained, unconstrained, unrestricted, uncontrolled,
uncontrollable, ungoverned, ungovernable, unbridled, uncurbed:
She must learn to suppress her incontinent tongue. 2 lecherous,
libidinous, lascivious, libertine, lustful, lewd, debauched,
wanton, dissolute, loose, lubricious or lubricous, salacious,
profligate, obscene, dirty, filthy: Members of the Hell-Fire
Club were well known for their incontinent behaviour. 3
self-soiling, bedwetting, Medicine enuretic: Some old people
lose control and become incontinent.
incontrovertible
adj. irrefutable, indisputable, indubitable, undeniable,
incontestable, unquestionable, sure, certain, definite,
definitive, established, absolute, positive: The fingerprint
was incontrovertible evidence that he had been there.