Answer:

syn

Answer	Crossword Clue
SYN	Antonym ant.
SYN	Thesaurus wd.
SYN	Wd. in Roget's

SYN	Antonym's opp.
SYN	Opposite of ant.
SYN	Wd. from Roget
SYN	Wd. of similar meaning
SYN	Substitutable wd.
SYN	OED entry
SYN	Dict. entry
SYN	Passion for love, e.g.: Abbr.

SYN	Roget wd.
SYN	Thesaurus entry: Abbr.
SYN	Brief, for short: Abbr.
SYN	Equivalent wd.
SYN	Certain, for sure: Abbr.
SYN	Yearns for pines?: Abbr.
SYN	Case, for instance: Abbr.
SYN	Roget entry: Abbr.

SYN	Single, for one: Abbr.
SYN	Genuine, for real: Abbr.
SYN	Lexicon abbr.
SYN	A word from P.M. Roget
SYN	Dict. offering, often
SYN	"Beauty" for "loveliness," for example (abbr.)
SYN	Ant. ant.
SYN	Antonym's antonym (abbr.)

SYN	Dict. offering
SYN	"Absent," for "out" (abbr.)
SYN	Smart, to sharp (abbr.)
SYN	Dict. listing
SYN	Thesaurus entry, for short
SYN	Dictionary abbr.
SYN	Thesaurus feature (abbr.)
SYN	Prefix meaning "together"

SYN	Roget's wd.
SYN	Brief, for short (abbr.)
SYN	Dictionary def.
SYN	Instance, for example (abbr.)
SYN	Strength for teeth, say (abbr.)