ve not, signifying to make a formal
accusation, present a specific charge; the same is true of the noun
_complaint_.

Antonyms:

applaud, approve, commend, eulogize, laud, praise.

Prepositions:

Complain _of_ a thing _to_ a person; _of_ one person _to_ another, _of_
or _against_ a person _for_ an act; _to_ an officer; _before_ the court;
_about_ a thing.

* * * * *

COMPLEX.

Synonyms:

abstruse, confused, intricate, mixed,
complicated, conglomerate, involved, multiform,
composite, entangled, manifold, obscure,
compound, heterogeneous, mingled, tangled.

That is _complex_ which is made up of several connected parts. That is
_compound_ in which the parts are not merely connected, but fused, or
otherwise combined into a single substance. In a _composite_ object the
different parts have less of unity than in that which is _complex_ or
_compound_, but maintain their distinct individuality. In a
_heterogeneous_ body unlike parts or particles are intermingled, often
without apparent order or plan. _Conglomerate_ (literally, globed
together) is said of a _confused_ mingling of masses or lumps of various
substances. The New England pudding-stone is a _conglomerate_ rock. In a
_complex_ object the arrangement and relation of parts may be perfectly
clear; in a _complicated_ mechanism the parts are so numerous, or so
combined, that the mind can not readily grasp their mutual relations; in
an _intricate_ arrangement the parts are so intertwined that it is
difficult to follow their windings; things are _involved_ which are
rolled together so as not to be easily separated, either in thought or
in fact; things which are _tangled_ or _entangled_ mutually hold and
draw upon each other. The conception of a material object is usually
_complex_, involving form, color, size, and other elements; a clock is a
_complicated_ mechanism; the Gordian knot was _intricate_; the twining
serpents of the Laocoon are _involved_. We speak of an _abstruse_
statement, a _complex_ conception, a _confused_ heap, a _heterogeneous_
mass, a _tangled_ skein, an _intricate_ problem; of _composite_
architecture, an _involved_ sentence; of the _complicated_ or
_intricate_ accounts of a great business, the _entangled_ accounts of an
incompetent or dishonest bookkeeper.

Antonyms:

clear, homogeneous, plain, uncombined, uniform,
direct, obvious, simple