Ridiculous
Ludicrous, Farcical, Hilarious (Adjective).
Substantial
Considerable, Material, Sizable (Adjective).
Flexibility
Pliability, Malleability, Plasticity (Noun).
Inexhaustible
Unlimited, Infinite, Endless (Adjective).
Impediment
Hindrance, Obstacle, Barrier (Noun). C.f. Shakespeare: “Let me not to the marriage of true minds admit impediments”.
Fervent
Ardent, Sincere, Passionate (Adjective).
Distinguished
Eminent, Renowned, Famous (Adjective).
Demonstrative
Expressive, Emotional, Communicative (Adjective).
Erode
Wear away, Dissolve, Abrade (Verb).
Insatiable
Unquenchable, Unappeasable, Voracious (Adjective).
Benefactor
Patron, Supporter, Champion of a cause (Noun).
Grimace
Scowl, Frown, Sneer (Verb).
Placidity
Calmness, Tranquillity (Noun).
Bawl
Shout, Yell, Scream (Verb).
Startling
Surprising, Astonishing, Amazing (Adjective).
Ambiguity
Ambivalence, Equivocation (Noun).
Determined
Resolute, Unwavering, Adamant (Adjective).
Disdain
Contempt, Scorn, Derision (Noun).
Vigorous
Spirited, Mettlesome, Resolute (Adjective).
Manifestation
Display, Demonstration, Exhibition, Presentation (Noun).
Overwhelming
Profuse, Enormous, Immense (Adjective).
Contradiction
Opposition, Refutation, Denial (Noun).
Inadequate
Deficient, Insufficient, Scanty (Adjective).