Some advanced adjectives include ubiquitous (everywhere), unyielding (firm), unctuous (excessively flattering), untamed (wild), utilitarian (practical), unwavering (steady), unorthodox (unconventional), urbane (sophisticated), unruly (disorderly), unblemished (perfect).

Prefixes: “un-” (uncertain), “ultra-” (ultramodern), “under-” (underestimate), “up-” (uplifting).

Suffixes: “-ous” (ubiquitous), “-ity” (uniformity), “-able” (unavoidable), “-ing” (upcoming).

Read literature featuring complex vocabulary.

Create word maps linking synonyms and antonyms.

Use mnemonic techniques to memorise new words.

Practice speaking and writing with newly learned words.

Unanimous decision, upmarket, utility, underwriting, utilisation, upselling, unique proposition, urbanisation, unregulated, unincorporated.

Unravel, undertake, upend, unleash, utilise, upgrade, unify, uplift, uproot, utter.

Use → Utilise, employ

Uncover → Reveal, disclose

Understand → Comprehend, grasp

Upset → Disrupt, perturb

Unite → Merge, integrate

Ubiquitous (omnipresent) ↔ Rare

Unanimous (in agreement) ↔ Divided

Unkempt (messy) ↔ Neat

Unwavering (steady) ↔ Inconsistent

Uplifting (inspiring) ↔ Depressing

Use unique and uncommon words for precision.

Avoid unclear or unstructured wording.

Include unambiguous terminology in arguments.

Write with utmost clarity for better impact.

Unanimous, ubiquitous, ultraviolet, unquenchable, utilitarian, urbanisation, unequivocal, unparalleled, unpretentious, unscrupulous.

Under the weather – Feeling unwell.

Up in the air – Uncertain or undecided.

Under one’s nose – Happening nearby but unnoticed.

Uncharted territory – A new or unfamiliar situation.

Ups and downs – Good and bad times.