momentary (adj.)
- annual
- biannual
- biennial
- bimonthly
- biweekly
- brief
- brittle
- capricious
- catamenial
- centenary
- centennial
- changeable
- corruptible
- daily
- deciduous
- diurnal
- dying
- ephemeral
- evanescent
- fading
- fickle
- fleeting
- fly-by-night
- flying
- fortnightly
- fragile
- frail
- fugacious
- fugitive
- hasty
- hebdomadal
- hourly
- immediate
- impermanent
- impetuous
- impulsive
- inconstant
- instant
- instantaneous
- insubstantial
- menstrual
- momentaneous
- monthly
- mortal
- mutable
- passing
- perishable
- presto
- quarterly
- quick
- quotidian
- secular
- semestral
- semiannual
- semimonthly
- semiweekly
- short
- short-lived
- temporal
- temporary
- tertian
- transient
- transitive
- transitory
- triennial
- unstable
- volatile
- weekly
- yearly
Ah, happy hills! ah, pleasing shade!
Ah, fields beloved in vain!
Where once my careless childhood stray'd,
A stranger yet to pain!
I feel the gales that from ye blow
A momentary bliss bestow.
