As verbs the difference between envisage and foreknow

is that envisage is to conceive or see something within one's mind. To imagine or envision while foreknow is to have knowledge of beforehand.

As adjectives the difference between rhetorical and grandiloquent

is that rhetorical is part of or similar to rhetoric, which is the use of language as a means to persuade while grandiloquent is given to using language in a showy way by using an excessive amount of difficult words to impress others; bombastic; turgid.

Sickening is a related term of bitter.

As adjectives the difference between sickening and bitter

is that sickening is causing sickness or disgust while bitter is having an acrid taste (usually from a basic substance).

As verbs the difference between sickening and bitter

is that sickening is while bitter is to make bitter.

As nouns the difference between sickening and bitter

is that sickening is the act of making somebody sick while bitter is (usually in the plural bitters) a liquid or powder, made from bitter herbs, used in mixed drinks or as a tonic.

Sexual is a related term of wanton.

As adjectives the difference between sexual and wanton

is that sexual is of or relating to having sex, sexual acts and sexual reproduction while wanton is (obsolete) undisciplined, unruly; not able to be controlled.

As nouns the difference between sexual and wanton

is that sexual is (biology) a species which reproduces by sexual rather than asexual reproduction, or a member of such a species while wanton is a pampered or coddled person.

As a verb wanton is

to rove and ramble without restraint, rule, or limit; to revel; to play loosely; to frolic.

Discovery is a related term of view.

As nouns the difference between discovery and view

is that discovery is something discovered while view is (label) visual perception.

As a verb view is

to look at.

Clandestine is a synonym of private.

As adjectives the difference between clandestine and private

is that clandestine is done or kept in secret, sometimes to conceal an illicit or improper purpose while private is belonging to, concerning, or accessible only to an individual person or a specific group.

As a noun private is

the lowest rank of the army.

Fervent is a related term of buoyant.

As adjectives the difference between fervent and buoyant

is that fervent is exhibiting particular enthusiasm, zeal, conviction, persistence, or belief while buoyant is having buoyancy; able to float.

Unprofitable is a related term of unsuccessful.

As adjectives the difference between unprofitable and unsuccessful

is that unprofitable is not making a profit while unsuccessful is failed, not successful.

Unpleasant is a related term of appalling.

As adjectives the difference between unpleasant and appalling

is that unpleasant is not pleasant while appalling is horrifying and astonishing.

As a verb appalling is

.

As adjectives the difference between everlasting and constant

is that everlasting is lasting or enduring forever; existing or continuing without end; immortal; eternal while constant is unchanged through time or space; permanent.

As nouns the difference between everlasting and constant

is that everlasting is an everlasting flower while constant is that which is permanent or invariable.