(n) break in contact
not hearing from
having no communication with
(n) nuclear nonproliferation
(n,adj-no) determined
steadfast
unswerving
unshakable
(n) absolutely secure
(n) poor academic performance
underachievement
(n,adj-na,adj-no) lacking enough gravity for (a position, task)
being an insignificant figure for (a position)
(n,adj-na) stubborn and ignorant
(n) dysfunction (often medical)
malfunction
insufficiency
(adj-i) (uk) unpleasant
awkward
(n) (Buddh) the pain of not getting what one seeks
(n) castration anxiety
(n) suspicious behavior
acting suspiciously
(n,adj-no) poor business performance
economic slump
(n) firm and solid
sturdy and indestructible
unshakable
adamantine
(n) financial panic
(n,adj-na) situation (turn of events) being unfavorable (disadvantageous)
(n) economic malaise
(n,adj-no) unprofitable business operation
(n) lack of blood flow
poor circulation
(n) poor health
failing health
(adj-na,n) indomitable perseverance
invincible fortitude
(n,adj-no) cause unknown
(n) respiratory failure
(adj-na,n) poor talker
(n) permanent and immutable
(n) structural recession
(n,adj-no) missing
unaccounted for
(n) being beyond recovery
having no hope of recovery
(n) anonymous
(exp) At forty, one has no doubts. (Confucius)