IAS or i.a.s.

1. Immediate access store (computing)
2. Immigration Advisory Service
3. Indicated air speed (aeronautics)
4. Instrument approach system

• feux d'artifice
• feux de joie
• fever
• fevered
• feverfew
• feverfews
• fever-heat
• fevering
• feverish
• feverishly
• feverishness
• feverishnesses
• feverous
• fever pitch
• fever pitches
• fevers
• fever therapy
• fever tree
• fever trees
• few
• few and far between
• fewer
• fewest
• fewmet
• fewmets