ought to do; have to do; must do; feel obliged to
living thing; living creature; animal; life
seeing through; fluoroscopy; roentgenoscopy; clairvoyance; seeing through (objects)
fort; fortress; stronghold; fortification
chase; pursuit; tracking; following up; tracing
careless; stupid; thoughtless; heedless; unobservant; inadvertent
close by; right there; short distance away; at once; as soon as possible; immediately
between the waves; in the waves; on the waves; behind the waves; beneath the waves
emergency; unexpectedness
will; resolution; kindness; goodwill; gift (as a token of gratitude)
to look through; to hold up to the light; to make an opening; to leave space; to fart without making a sound
black and white; monochrome; good and evil; right and wrong; guilt and innocence
skeletal frame; skeleton; framework; frame; outline
as soon as possible; as quickly as possible; speedily; without delay; ASAP
odour; odor; scent; aura; whiff; smacks of ...
interval between the waves; gap between waves
preserving one's life; longevity; long life
to slide down; to slip down
cockpit; control cabin; flight compartment; pilot compartment; control room
buzz; hum; shake (with vigor); shaking
general; popular; common; typical
middle; midway; middle position; moderate position; interim; intermediary
drifting; drift; being adrift
to shed light; to cast light
artificial; man-made; human work; human skill; artificiality
utensil; implement; tool; instrument; appliance; apparatus
capsule toy; vending machine toy; gacha; loot box; loot crate
(feeling a chill or shiver) suddenly; (feeling) chilly; chillily; with a sudden sense of dread (or fear, etc.); (being) suddenly (afraid, frightened, etc.); suddenly (breaking out in a cold sweat)
break in time; interruption; pause
circulation; rotation; cycle; loop
crown (of head); summit (of mountain); easy win for one; something received
to lean on; to recline on; to rely on; to depend on
forefoot; forefeet; foreleg; forelimb
tuft (of hair, threads, etc.); fringe; bunch (of grapes, bananas, etc.); cluster (of flowers); segment (of a tangerine, etc.); section
chamber (in equipment, e.g. expansion chamber, combustion chamber, etc.); chamber; room