LET - To allow to, not to prevent (+ infinitive, but usually without to).
NET - A mesh of string, cord or rope.
TEE - The name of the Latin script letter T/t.
TEN - A numerical value equal to 10; the number occurring after nine and before eleven, represented in Roman numerals as X, in Arabic numerals as 10, and in the hexadecimal system (base 16) as A.
EEL - Any fish of the order Anguilliformes which are elongated and resemble snakes. There are freshwater and marine species.
REEL - A lively dance of the Highlanders of Scotland; also, the music to the dance; -- often called Scotch reel.
RENT - A payment made by a tenant at intervals in order to occupy a property.
TEEN - A teenager, a person between 13 and 19 years old.
TREE - A large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).
LEER - A significant side glance; a glance expressive of some passion, as malignity, amorousness, etc.; a sly or lecherous look.
TERN - Any of various sea birds of the family Sternidae that are similar to gulls but are smaller, more elegant and have a forked tail.
ENTER - To go into (a room, etc.).
RELENT - To become less rigid or hard; to soften; to yield; to dissolve; to melt; to deliquesce.